109results about How to "Realize fine-tuning" patented technology

The present invention discloses an HUD brightness automatic regulation device and method in the automatic control technology field. The device comprises: a horizontal light sensor and a vertical light sensor, wherein the installation directions of the horizontal light sensor and the vertical light sensor are mutually perpendicular and the measuring ranges of the horizontal light sensor and the vertical light sensor are the same, and the vertical light sensor is provided with a light filter membrane; a microprocessor, wherein the microprocessor comprises an A / D processing module, a data processing module and a PWM module, the horizontal light sensor and the vertical light sensor are configured to convert the detected light brightness signals to digital signals through the A / D processing module and then transmit the digital signals to the data processing module, and the data processing module performs processing and calculation to obtain PWM digital quantity applied to the PWM module; the LED module, wherein the LED module comprises a LED driver and a LED lighting chain, and the PWM module controls the brightness of the LED lighting chain through the LED driver; an external rotary knob configured to transmit the brightness regulation signals to the A / D module for manual regulation of the brightness. The light regulation range is wide, and the light regulation is more smooth.

The invention provides a machine reading understanding model training method and device based on answer sampling. The method includes: Specifically, when machine reading understanding model training is carried out, utilizing a maximum likelihood estimation function to train a target machine reading understanding model, obtaining a basic machine reading understanding model , then utilizing a minimum risk training loss function to continue to train the basic machine reading understanding model so as to achieve fine adjustment of the basic machine reading understanding model parameters, and continuing to optimize the model. Due to the fact that the minimum risk training loss function is adopted to optimize the basic model trained through the maximum likelihood estimation function, answers canbe extracted through the trained model more accurately. In addition, when the minimum risk training loss function is used for loss calculation, k-is carried out on the output answer of the model; Andloss calculation is carried out on answers obtained by top dynamic sampling, so that the data processing amount can be reduced.

The invention discloses a large wind power generation unit and a blade installation structure thereof. The blade installation structure comprises a blade, a hub, a pitch-variable bearing and a gear. The blade comprises a blade root. A web is arranged on the hub. The pitch-variable bearing comprises an inner ring and an outer ring which are matched through rolling pieces. The outer ring is fixedly connected with the hub. Gear hobs arranged around the whole inner wall of the inner ring are integrally arranged on the inner wall of the inner ring. The gear is meshed with the gear hobs and driven by a drive device. The installation structure further comprises a connection flange, multiple sets of hanging lugs, multiple connection plates and multiple hydraulic cylinders. The connection flange is arranged between the inner ring and the blade root in a clamped mode. All the hanging lugs are arranged on the blade root and distributed in a central symmetry mode. Each connection plate, the corresponding hydraulic cylinder and the corresponding set of hanging lugs correspond to one another. By means of the combined arrangement, strength and operation reliability are improved, and therefore adjustment of the gear does not need to be conducted on the ground, fine adjustment is achieved, work efficiency is improved, cost and labor intensity are reduced, and operation safety is improved.

A scheduling and gear-arranging method suitable for a one-way continuous gate-passing ship comprises: establishing an optimal scheduling gear scheme of the ship to be braked, performing gear pre-arrangement, and notifying the ship to be braked to arrive at the designated position of a berthing pier according to designated time and berthing number; based on the pre-gear-arranging model and the shipinformation, establishing a secondary gear-arranging model of the gate-passing ship, calculating the time cost of the gate-passing scheme by applying an iterative algorithm according to the secondarygear-arranging model and with the minimum gate-passing time cost as the target, and selecting the scheme with the minimum gate-passing time cost as the ship gate-entering sequence and the gate-entering position; and according to the gate opening and closing time and the ship traveling speed, obtaining a scheme with the minimum gate passing time of the next gate through calculation according to asecondary gear-arranging model, and accurately indicating each ship of the next gate to reach the exact position of the to-be-braked area at the specific moment. Gate passing units can be reduced as much as possible, the utilization rate of the lock chamber is increased, the gate passing time is shortened, and the navigation efficiency is improved.

A capacitive load driving circuit and plasma display panel, wherein a scan driving section (202) includes: a shift register section (11) receiving a scan data signal (8) and a scan clock signal (9); a plurality of pulse width control circuits (211) each receiving an output signal from the shift register section (11) and a negative pulse width control signal (220) to output a signal whose pulse width is controlled based on the negative pulse width control signal (220); a blanking section (12) receiving the output signals from the plurality of pulse width control circuits and a blanking signal (10); and a plurality of high voltage output sections for amplifying the output signals from the plurality of pulse width control circuits (211), which are received via the blanking section (12), to successively output negative pulses each having a controlled pulse width to the scanning electrodes, such that a PDP capable of respectively regulating the width of the negative pulses applied to the scanning electrode corresponding to the rising of the clock frequency.

This invention relates to cell phone cameral focus adjusting device, which comprises flexible circuit board, sensor, infrared filter slice, bottom socket, four coils, lens cylinder, magnetic sustain rack, six slices of magnetic iron, upper cover and two hall element, wherein this invention provides cell phone cameral focus adjusting device forms feed part composed of magnetic iron, coil and Hall element on outer cylinder to form driver part; the bottom socket inner cylinder screw seam lens, magnetic iron sustain rack and magnetic iron forms feed part; by use of Hall element outputs level connection coil current to generate magnetic force between coil and magnetic iron to keep adjusting operation for move along light axis.

The invention provides an adjustable mounting structure for an arc-shaped assembly-type suspended ceiling. The adjustable mounting structure comprises a top face base layer; an arc-shaped veneer is mounted on the top face base layer, a plurality of adjusting mechanisms are arranged between the arc-shaped veneer and the top face base layer, and each adjusting mechanism comprises a first ceiling rod, a second ceiling rod and one or more adjusting components; and the first ceiling rod is fixedly connected to the top face base layer, the bottom of the first ceiling rod is connected with a sleeve,the second ceiling rod is connected to the other end of the sleeve, the other opposite end of the second ceiling rod is connected to the arc-shaped veneer, the adjusting components each comprise an adjusting rod and a connecting rod, and one ends of the adjusting rods are connected to the sleeve, the other ends of the adjusting rods are rotationally connected with the connecting rods, and the other ends of the connecting rods are connected to the arc-shaped veneer. Fine adjustment operation in the mounting process of a arc-shaped top facing can be achieved, and then the mounting precision is improved.

The invention relates to the technical field of sewing devices, in particular to a novel barrel type sewing machine. The novel barrel type sewing machine includes a sewing machine body, an oil tan, and a fabric feeding mechanism, a stitch length locking mechanism, a pre-winding device, a dual-clamping machine, and an automatic lubrication system which are arranged on the sewing machine body; the fabric feeding mechanism includes a lower shaft, a tooth lifting cam, a tooth lifting fork, a tooth lifting shaft, a fabric feeding tooth guide rack, a fabric feeding tooth guide rack slide block, a fabric feeding tooth support, a fabric feeding tooth support shaft, a fabric feeding support slide block, and a fabric feeding tooth support positioning plate; the stitch length locking mechanism includes a stitch length button, a locking pin and a locking pin spring; and the pre-winding device includes a base, a winding shuttle core, a shuttle core shaft, a cutter, a shuttle core seat, a winding positioning wheel, a friction wheel, a winding positioning hook, and a limiting adjustment wrench which are fixed on the sewing machine body. The mechanical structure of the conventional sewing machine is changed, the automatic lubrication system is added, the performance of the sewing machine is fully improved, and the novel barrel type sewing machine has good application prospect and economic benefits.

The invention provides a radio frequency circuit and a mobile terminal, and relates to the field of mobile terminals. The radio frequency circuit comprises a radio frequency transceiver, an antenna circuit, an antenna and a negative feedback circuit, wherein the antenna circuit is connected with the first end of the radio frequency transceiver; the first end of the negative feedback circuit is connected with the second end of the radio frequency transceiver; the second end of the negative feedback circuit is connected with the antenna circuit; the third end of the negative feedback circuit is connected with the antenna; and the negative feedback circuit is used for feeding back radiation power in the antenna circuit to the radio frequency transceiver, so that the radio frequency transceiver can adjust the sending power of a signal according to the radiation power. Therefore, fine adjustment of signal sending power is realized, and requirements of tests are met.

The invention relates to a textile yarn tension control mechanism comprising a control box, a control device and a regulating device. The middle part of the control box is provided with three controlslots front to back in sequence, and the interiors of the control slots are connected with the control device in a sliding fit manner; the lower end of the control box is provided with the regulatingdevice through a bearing, and the control device comprises a control panel; the interiors of the control slots are connected with the control panel in the sliding fit manner, and the upper end of thecontrol panel is provided with a control cylinder of which the upper end is provided with a lifting rotation disk through a bearing; and the middle part of the lifting rotation disk is in threaded connection with a threaded control rod. According to the textile yarn tension control mechanism, the problems that the occupied area of a single control mechanism for single wires is large, the operationis inconvenient, and a plurality of control devices can not be regulated simultaneously; only a plurality of wires are regulated simultaneously when the multiple wires are controlled by the single control mechanism; the flexibility is poor, and the overall regulation needs to be performed during regulation of the single wires; and the regulation amplitude is large, and the regulation accuracy isnot high and the like are solved; and the textile yarn tension control function can be achieved.

The invention discloses a three-dimensional micro-drive four-electrode replaceable probe, which comprises a four-electrode probe holder and a three-dimensional micro-drive four-electrode base matched with the four-electrode probe holder. Three copper electrodes isolated by ceramic insulation sheets are arranged at the bottom of a threaded rod of a probe tip frame of the four-electrode probe holder, contact with four electrodes on the inner wall of a scanatron of the three-dimensional micro-drive four-electrode base together with the threaded rod of the probe tip frame respectively, and are led out through four bundles of copper conductors to be used as input and output terminals for measurement. A probe frame of a scanning tunneling microscope also can be arranged by a thread on the upper part of the inner wall of the scanatron of the three-dimensional micro-drive four-electrode base, so that four-probe transport measurement and single-probe surface scanning are compatible. By the structure combining direct insertion and the thread, the electrodes can contact stably and firmly, and can bear abrasion caused by frequent replacement for use.

The invention discloses an automatic leveling laser transmitter fixture, which comprises a frame, and a locking positioning component, a floating component, an angle fixing component, and a levelnessadjusting component, which are disposed on the frame. The locking positioning component is arranged on the upper portion of the frame; the floating component comprises a movable disc with a hole in the middle, a locking sleeve which penetrates the hole in the middle of the movable disc and is tightly connected with the movable disc and a fixture which is arranged in the locking sleeve; the lockingpositioning device can lock and position the floating component; the levelness adjusting component comprises a spring plunger and a plunger support, which are arranged below the movable disc; the levelness adjusting component can adjust the levelness of the movable disc; and the angle fixing component is used for providing locking force for the locking positioning component. The fixture in the invention can better adjust the position of the laser transmitter so that an optical interface is tightly attached to the laser transmitter; the angle position can be automatically adjusted; and it canbe realized that the laser transmitter is automatically ejected after completing coupling, thereby bringing convenience for fetching.

The invention discloses a static diaphragm coupler angular deviation fatigue testing bed. The static diaphragm coupler angular deviation fatigue testing bed comprises a diaphragm coupler testing mechanism and an annular deviation adjusting mechanism. The diaphragm coupler testing mechanism is mainly composed of a frequency conversion main input motor, a first coupler, a first torque meter, a first torque meter support, a second coupler, a first transmission shaft, a first bearing support, a second transmission shaft, a third coupler, a second torque meter, a second torque meter support, a fourth coupler, an universal transmission shaft, a fifth coupler and a frequency conversion loading motor. The annular deviation adjusting mechanism is mainly composed of a second bearing support, a hand-cranking handle, a rotating rack, a positioning pin, a transmission worm support and a transmission worm. According to the static diaphragm coupler angular deviation fatigue testing bed, the diaphragm coupler angular deviation is measured, the adjusting precision of the diaphragm coupler angular deviation is ensured, a static diaphragm coupler angular deviation fatigue test can be carried out through the diaphragm coupler testing mechanism, the rotating speed and the torque can be collected in real time through the torque meters connected with the transmission shafts at the two ends of a diaphragm coupler, and therefore the stress states of the two ends of the diaphragm coupler can be analyzed.

The invention relates to a high-precision temperature control method and a temperature control device based on particle accelerator material irradiation. The temperature control device comprises an infrared temperature measuring unit, a resistance heating unit, a water cooling and air cooling unit, a signal control / transmission unit, a sample stage and an irradiation sample thereon, and the like. The sample stage integrates and combines the resistance heating unit and the water cooling and air cooling unit to control irradiation sample heating and cooling simultaneously. The implementation principle of the temperature control method using the temperature control device is as follows: the irradiation temperature of a material is measured in real time using the device, the power of a resistance heating wire and the flow of cooling water and cooling air are controlled via instruction signal transmission lines connected to the computer program control system, and the resistance heating unit and the water cooling and air cooling unit are adjusted automatically and simultaneously to carry out temperature control. Through the temperature control device and the temperature control method of the invention, real-time, automatic and accurate control on the irradiation temperature of a particle accelerator material can be realized, and the temperature control accuracy of particle accelerator material irradiation can be improved greatly.

The invention relates to the technical field of meteorological observation equipment, and provides a self-adaptive adjusting device for a photoelectric digital sunshine recorder, the self-adaptive adjusting device comprises a fixed supporting mechanism, a mounting seat, a mounting platform, a levelness adjusting mechanism and an angle adjusting mechanism, the mounting seat is connected to the fixed supporting mechanism through a bolt, the mounting platform is rotatably connected to the mounting seat through a movable arm, and the angle adjusting mechanism is rotatably connected to the mounting seat. The installation platform is further connected with a levelness adjusting mechanism, the levelness adjusting mechanism is installed on the surface of the installation base, a supporting frame is further installed on the installation platform, an angle adjusting mechanism is installed on the supporting frame, a photoelectric digital sunshine recorder body is installed on the angle adjusting mechanism, and a levelness sensor is installed on the surface of the installation platform. An angle sensor is installed on the photoelectric digital sunshine recorder body, a signal transceiver is preassembled on the fixed supporting mechanism, the levelness sensor, the angle sensor, the levelness adjusting mechanism and the angle adjusting mechanism are all electrically connected with the signal transceiver, and the signal transceiver is electrically connected with the control system.

The invention provides a dry hanging type wallboard installation structure. The dry hanging type wallboard installation structure comprises a keel, a back hanging piece and a veneer, the section of the keel is in an M shape, the opening direction of the keel faces the wall face, the keel is fixedly installed on the wall face, the section of the back hanging piece is in a Z shape, the back hangingpiece comprises a connecting part with an I-shaped section and a clamping part with an L-shaped section, and the connecting part is perpendicular to the clamping part; the veneer is bonded to the connecting part through a bonding material, a whole formed by bonding the back hanging piece and the veneer is clamped to the keel through the clamping part, at least one adjusting screw is arranged on the clamping part, the adjusting screw penetrates through the clamping part, the bottom end of the adjusting screw abuts against the surface of the keel, and the adjusting screw is parallel to the veneer. According to the dry hanging type wallboard installation structure, the construction efficiency is improved through the direct dry hanging mode of the adjustable back hanging pieces and the transverse M-shaped light steel keels; and fine adjustment of the installation height of the veneer is achieved by adjusting the screws, and the butt joint accuracy of the veneer is higher.

The invention provides an adjustable veneer mounting structure, and relates to the technical field of decoration design. The adjustable veneer mounting structure comprises a bottom piece, a clamping piece and a functional piece, the functional piece comprises a first piece and a second piece, one end of the first piece is provided with a sleeve, at least one part of the bottom piece is located inthe sleeve, the other end of the first piece is provided with a spherical bulge, one end of the second piece is provided with a concave spherical groove, a plane column is arranged at the other end ofthe second piece, at least half of the spherical bulge is located in the concave spherical groove, the inner diameter of an opening of the concave spherical groove is smaller than the diameter of thespherical bulge, the bottom piece is provided with a first bolt, the sleeve is provided with a first groove, the plane column is provided with a second bolt, and the clamping piece is provided with asecond groove. The adjustable veneer mounting structure is easy to mount and flexible to adjust, a leveling layer does not need to be mounted, the telescopic function can be achieved, the veneer mounting cost is reduced, fine adjustment of veneers at all angles can be achieved, the flatness is high after the veneers are mounted, the stability is good, adjustment can be conducted according to thefield mounting requirements of various veneers, and the applicability is wide.

The invention discloses a conductive core plate and a manufacturing method. The conductive core plate comprises an insulating material layer, a metal conductive circuit layer, a packaging adhesive film layer and a back plate layer in sequence from top to bottom, wherein all the layers are bonded in a low-temperature heating mode; the metal conductive circuit layer and the packaging adhesive film layer are compounded and bonded, and a conductive circuit diagram is arranged on the metal conductive circuit layer; a plurality of small holes are formed in the insulating material layer, and the positions of the holes correspond to the positions of electrode points on the battery piece; the conductive circuit diagram takes set unit patterns as a basis, and the unit patterns are arranged above thebattery piece in an array manner. According to the invention, the conductive core plate adopts a longitudinal cardinal number column 13*12 half-cut battery arrangement mode, and the cardinal number column battery arrangement is achieved; meanwhile, the number of the batteries connected with the diodes is equal, the installation direction of a junction box is parallel to the short edges of the assembly and is the same as the position of a junction box of a conventional assembly, and if the connection mode is a solder strip assembly, the connection mode is hardly achieved, and the equipment transformation cost can be effectively reduced at the same time.

The invention discloses a micro motor mechanism, which is used for adjusting the position of an element to be adjusted. The micro motor mechanism comprises a frame, a driving shaft, a primary driving device and a secondary driving device, wherein the driving shaft is arranged in the frame; the primary driving device is used for driving the driving shaft to move relative to the frame; the secondary driving device is arranged on the top of the driving shaft; the element to be adjusted is arranged on the secondary driving device; the element to be adjusted is driven by the secondary driving device to move relative to the top of the driving shaft; thus, a large driving travel can be realized by using the primary driving device, and high resolution can be realized by using the secondary driving; meanwhile, the invention also discloses a driving method of the micro motor mechanism; in the method, large driving travel is realized by using the primary driving device, and high resolution is realized by using the secondary driving; and the method is simple and convenient.

The invention discloses a thyroid surgical stent for clinical surgery, and relates to the technical field of medical apparatus and instruments. The thyroid surgical stent comprises a first guard plateand a second guard plate which are connected through an angle adjusting device, a first support ring and a second support ring are installed on the sides of the connecting ends respectively to form aclosed loop, and adjusting rods are symmetrically installed at the two far ends of the two support rings; the adjusting rods comprise screws installed on the first support ring and the second supportring respectively and internal threaded sleeves connected with the two screws. According to the thyroid surgical stent for the clinical surgery, the stent is installed on the neck and then can be opened, the body position needed by thyroid surgery is kept, fixing is stable, convenience is brought to surgical operation, the comfort of a patient is guaranteed under long-time surgical operation, andthe stent is suitable for application and popularization of medical institutions.

The invention discloses a 5G mobile network detection system based on cloud computing. The 5G mobile network detection system comprises a signal sampling module and a frequency selection adjusting module, the signal sampling module samples communication base station node signals in the 5G mobile network detection system based on cloud computing. The signal sampling module is connected with a frequency-selecting adjusting module; the frequency-selecting adjusting module uses a capacitor C4 as a decoupling capacitor for reducing signal-to-noise ratio; then, an inductor L1 is used for generatingsignal resonance so that voltage at two ends of a parallel resistor R6 is increased; then, an operational amplifier AR2 is used for buffering signals; in the second path, capacitors C5-C7 are used toform a frequency-selecting circuit to screen out a single frequency signal, that is to say, a capacitor C5 and a capacitor C6 are used to suppress abnormal frequency so as to achieve the function of screening signal frequency. And finally, the two signals are input into the non-inverting input end of the operational amplifier AR1 after being subjected to voltage division through the variable resistor RW2, the consistency of signal amplitude and source signals is ensured, the fine adjustment effect on output signals of the operational amplifier AR4 is achieved, the signal frequency can be adjusted in time when the system terminal receives the signals, and the crosstalk phenomenon is avoided.

The invention relates to a bearing, in particular to a high-speed heavy-duty high-speed rail bearing with a middle ball. The novel high-speed heavy-duty high-speed rail bearing is composed of an outerring with the middle ball, a deep groove ball bearing inner ring, two double-half inner rings and three rows of rolling bodies, wherein a deep groove ball bearing rolling body track is arranged in the middle of the inner circumference of the outer ring, circular roller tracks are respectively arranged on both ends of the deep groove ball bearing rolling body track at an interval, and circular rollers are respectively arranged in the tracks. A deep groove ball bearing structure is arranged in the middle of the inner circumference of the outer ring and between double sections of circular rollers or cylindrical rollers, the advantages of pure rolling friction of two-point contact of ball rolling bodies, high rotating speed and capability of bearing two-way combined load are fully used so asto design a mechanical structure of the middle ball, the scheme that the axial force of a roller contact angle bearing is increased by a double-section tapered roller bearing is replaced, roller deflection and frictional heating which are caused by stress concentration of the small end of a tapered roller can be effectively reduced, and the rotating speed and the rotary accuracy of the bearing areincreased. Because SKF bearing materials verify that the load carried by the rollers is uniformly distributed on the rollers and a raceway contact surface by virtue of the special circular cambered surfaces of the circular rollers, the middle ball is arranged between the double-row circular rollers, so that the radial bearing capacity of the bearing can be greatly increased, and low friction, lowtemperature rise and long service life are realized.

The invention provides an incision traction device for orthopedic surgery. The incision traction device comprises a fixing assembly, a telescopic column and a traction device body; the traction device comprises a box body, a driving assembly, two traction arms and traction blocks at the lower ends of the traction arms, and length adjusting assemblies are arranged on the traction arms; the driving assembly comprises a horizontal rotating disc, the traction arms are fixedly connected with the horizontal rotating disc, the other ends of the traction arms extend out of the front side wall of the box body, a vertical rotating shaft penetrates through a driven bevel gear, a horizontal rotating shaft is arranged on the rear side wall of the box body, a driving bevel gear and gears penetrate through the horizontal rotating shaft, the gears are meshed with each other, A horizontal rotating shaft extends out of the rear side wall of the box body and is fixedly connected with a hand crank; and the traction blocks are rotationally connected with the traction arms through vertical hinge shafts, and rotary positioning assemblies are arranged between the traction blocks and the hinge shafts. The device is connected with an operating bed, the structure is stable, time and labor are saved, the adjusting speed is gentle, the situation that a doctor pulls off force to make an incision slide is avoid, the traction blocks are more attached to the inner wall of the incision, the medical burden is relieved, and the operation efficiency is greatly improved.

The invention discloses a SOT26 test clamp with an adjustable test groove and an operation method thereof and belongs to the technical field of chip test. The SOT26 test clamp with the adjustable test groove provided by the invention comprises a fixed clamp and a moveable clamp, wherein the fixed clamp and the moveable clamp are connected through mutually matched rotating devices; the width adjustment of a clamp rim between the fixed clamp and the moveable clamp can be realized through the rotation of the moveable clamp relative to the fixed clamp; the clamp rim of the test clamp can be adaptively adjusted according to the size of SOT26. The operation method for the test clamp provided by the invention comprises the steps of pressing in SOT26, testing and pushing out; a spring is utilized to control the opening and closing of the moveable clamp, so that the left and right shifting caused by the size of SOT26 can be made up and the yield of once test can be increased; a jacking rod is additionally arranged; under the synergic effect of the moveable clamp and the jacking rod, the purposes of accurately positioning SOT26 in a test process, preventing the material overlapping and increasing the test yield can be achieved; equivalently, the capacity is promoted, so that the effect of double benefit can be achieved.

The invention discloses an adjusting method of a three-dimensional adjustable system of a complex multi-curve modeling veneer. The method includes the steps that a plurality of main keels arranged inparallel are assembled on an indoor roof or a wall body of a building through adjustable connecting parts; a plurality of auxiliary keels arranged in parallel are adjustably connected with the main keels through keel connecting parts, and the main keels and the auxiliary keels are vertically distributed; a plurality of decorative panels are adjustably connected with the auxiliary keels through upper hanging connecting parts and / or lower hanging connecting parts; the decorative panels are finely adjusted in the X direction and the Z direction through the keel connecting parts, the upper hangingconnecting parts and / or the lower hanging connecting parts; and the decorative panels are finely adjusted in the Y direction through the keel connecting parts. According to the adjusting method of the three-dimensional adjustable system of the complex multi-curve modeling veneer, fine adjustment of the decorative panels in the X direction, the Y direction and the Z direction can be achieved, theadjustment of the decorative panels is facilitated, and the installation precision of the decorative panels can be improved.

The invention discloses an eye-protecting device which comprises a mask, a handle fixed at the bottom of the mask and lenses which are inside an observation opening and are formed on the upper portion of the mask. The eye-protecting device is characterized in that the lenses are polarized lenses, and the number of the lenses is two. The lenses are placed in a stack mode, and are fixed in the observation opening through bearings in a rotating mode. The eye-protecting device further comprises an automatic adjusting unit connected with the lenses through the bearings in a transmission mode and a power supply supporting power to the automatic adjusting unit. The eye-protecting device ensures that observed images are soft and the brightness of the observed images is uniform. Because angles of the lenses can be automatically adjusted, even a user moves the angles of the lenses or the angles change by welding, visual images can still keep appropriate brightness. The eye-protecting device has the advantages of being fast in adjustment, free of dark space and capable of protecting eyesight.

The invention relates to the technical field of plastic surgery instruments, in particular to a designing device for double eyelids. All of adjustment is made on a set basis by a small margin, but anexisting designing device for the double eyelids can not meet the demand on narrow-margin adjustment. The designing device comprises a forming portion and a handhold portion which is connected with the forming portion, the forming portion comprises a forming head and a connecting rod, the forming head is fixedly connected with the connecting rod, and a protrusion is arranged at the lower end of the connecting rod; the handhold portion comprises a holding rod, a groove is formed in the holding rod, and multiple through holes are formed in the holding rod and communicated with the groove; the protrusion can pass through the through holes. When the height or width of the forming head needs to be adjusted, the protrusion is pressed to retract into the groove; by moving the connecting rod by asmall margin, the protrusion moves, and then is buckled with the through holes at an appropriate position, and therefore narrow-margin adjustment is achieved for the designing device for the double eyelids. The device is simple in structure and convenient to use.

The invention provides a measuring device for multi-parameters of a solid-liquid two-phase flow, and relates to the technical field of measurement of basic parameters of the two-phase flow. The measuring device comprises a box body and a box cover. A circular opening is formed in the top of the box body, and is matched with the box cover. A measuring mechanism for the heat conduction coefficient and a density measuring mechanism are arranged on the box cover respectively. The density measuring mechanism comprises an ultrasonic transducer fixing seat arranged at the bottom of the box cover andan ultrasonic transducer arranged inside the ultrasonic transducer fixing seat for measuring, wherein an organic glass plate is arranged right under the ultrasonic transducer. The measuring mechanismfor the heat conduction coefficient comprises a glass tube arranged at the bottom of the box cover. A metal platinum wire is mounted on the core of the glass tube, and a wire is arranged on the surface of the glass tube. The wire and the metal platinum wire form a loop for measuring the thermal conductivity coefficient. According to the measuring device for multi-parameters of the solid-liquid two-phase flow, the measuring device has the beneficial effects that multi-parameter measurement, such as density, thermal conductivity, and the like, can be realized; that the structure is simple; and that the measurement result is more accurate.