85results about How to "Guaranteed Tolerance" patented technology

A wound treatment device comprises a wound surface contacting plug (10) and a cover (24) for covering the wound surface (22) and the plug (10), wherein said plug (10) consists of a flat textile isolating material comprising at least one first surface layer (12), one second surface layer (14) and one intermediate space (18) arranged between said surface layers (12, 14). At least the first surface layer (12) is provided with a biocompatible surface and a structure which enables a liquid to pass and prevents a wound tissue from growing in said structure. The intermediate space (18) is provided with isolating threads (16) elastically holding the first surface layer (12) and the second surface layer at a certain distance from each other.

Provided is a multi-mode multi-frequency power amplifier (100), comprising: a controller (120) for receiving and outputting control signals based on external signals; a broadband amplifier channel (110) for receiving single-frequency or multi-frequency radio-frequency (RF) signals via an input end, conducting power amplification on the RF signals, and outputting the signals via an output end; a fundamental wave impedance convertor (170) comprising a first segment (130) shared by RF signals in respective frequency bands, a second segment (150) dedicated for RF signals in each frequency band, and a switch circuit (140), the switch circuit (140) being controlled by the controller (120) to switchably separate the RF signals with amplified power to the second segment (150) for multiple outputs.

The invention discloses a high-performance tin-phosphor bronze strip and a production method thereof. The high-performance tin-phosphor bronze strip comprises, by weight percent, 9% to 11% of Sn, 0.03% to 0.35% of P, not larger than 0.2% of Zn, not larger than 0.1% of Fe, not larger than 0.2% of Pb and the balance copper. Through the strict control over a casting technology, a rolling technology and an annealing technology of a tin-phosphor bronze alloy, a high-performance tin-phosphor bronze strip alloy product with the tin content ranging from 9% to 11% can be produced, and the application requirement of an IT industry and an electrommunication industry for a high-elasticity, high-strength and high-hardness copper alloy can be met.

The invention relates to a method for thermally measuring the heat insulation amount at high temperature and high pressure. The method mainly solves the problem that a method for thermally measuring the heat insulation amount at high temperature and high pressure is not available in the prior art. According to the method for thermally measuring the heat insulation amount at high temperature and high pressure, a calorimetry test can be carried out on a device for thermally measuring the heat insulation amount according to a heat insulation mode and an isothermy mode at the temperature below 800 DEG C and the pressure below 20 MPa, the reaction process can be precisely controlled, and data can be acquired and analyzed in real time. According to the technical scheme, the device comprises a central control system, a pressure control unit, a temperature control unit and a reaction still, the problems are well solved, and method can be used for thermally measuring the heat insulation amount at high temperature and high pressure.

The invention relates to a device for carrying out adiabatic calorimetric measurement at high temperature and high pressure, mainly aiming at solving the problem that methods for carrying out adiabatic calorimetric measurement at high temperature and high pressure do not exist yet in the prior art. The device for carrying out adiabatic calorimetric measurement at high temperature and high pressure can carry out calorimetric testing at 800 DEG C and 20MPa according to an adiabatic model and an isothermal model and can implement precise control on the reaction process and collect and analyze data in real time. The device comprises a central control system, a pressure control unit, a temperature control unit and a reaction kettle. The device has the effect of better solving the problem and can be used for carrying out adiabatic calorimetric measurement at high temperature and high pressure.

The invention discloses a two-dimensional pointing mechanism for a space optical remote sensing instrument. The two-dimensional pointing mechanism is composed of an installation machine seat, an azimuth axis drive assembly, a pitch axis drive assembly and a pointing mirror assembly, wherein the azimuth axis drive assembly comprises a drive servo motor, a high-accuracy encoder and a harmonic reducer, and the pitch axis drive assembly comprises a servo drive motor, a high-accuracy encoder, a harmonic reducer and an azimuth axis connecting piece. The two-dimensional pointing mechanism has the beneficial effects that compared with a traditional two-dimensional pointing mechanism, the two-dimensional pointing mechanism is high in pointing accuracy, simple in structure, small in load, low in assembling difficulty and the like; and meanwhile, the mechanism can continuously rotate by 360 degrees in one dimension, and the functions of in-orbit calibration and the like of the space optical remote sensing instrument can be achieved.

The invention provides a hydraulic support oil cylinder refabrication method based on CMT and belongs to the technical field of metal surface engineering. The hydraulic support oil cylinder refabrication method comprises the steps that mechanical machining and cleaning are firstly performed on the oil cylinder inner wall to be repaired in sequence, then CMT welding is performed on the hydraulic support oil cylinder inner wall, finally, the mechanical machining is performed on a CMT weld layer, and a refabricated hydraulic support oil cylinder is obtained. According to the hydraulic support oilcylinder refabrication method based on the CMT, the cold metal transition welding technology is utilized to weld the hydraulic support oil cylinder inner wall, heat input and spatter are less in thewelding peocess, the fact that the refabricated oil cylinder will not lose efficacy due to heat deformation can be guaranteed, and the service life of the oil cylinder is prolonged; by means of the manner that the mechanical machining is performed on the oil cylinder inner wall before and after the welding, the surface smoothness, the size and the tolerance of the oil cylinder all can be guaranteed to meet the drawing requirements; and meanwhile, the refabrication method provided by the invention is low in cost and high in efficiency, and full-automatic production can be realized.

The invention relates to a split lens, a camera shooting module and electronic equipment. The split lens comprises a first lens group, a second lens group and at least one light shielding element, wherein the first lens group includes at least one lens; the second lens group includes at least one lens; and the light shielding element is arranged between the lens, which is located at the bottom end, of the first lens group and the lens, which is located at the top end, of the second lens group so as to form a predetermined light path between the first lens group and the second lens group, and the light shielding element is stably arranged between the first lens group and the second lens group so as to be matched with the structure of the split lens.

The invention relates to a monitoring device of a direct-current traction power supply system of urban rail traffic facilities, in particular to a quick detection and protection device for the electric potential of a direct-current traction power supply return current rail. The device comprises a reset switch, a group of thyristor trigger circuits and a current relay, wherein the reset switch is connected between a cathodal return current rail and the earth, the thyristor trigger circuits are sequentially connected in series, the current relay is connected with the reset switch in parallel between the cathodal return current rail and the earth, and a voltage sampling circuit is also connected between the cathodal return current rail and the earth; and the output signals of the current relay and the voltage sampling circuit are output to a control circuit of the reset switch. By the synergic monitoring of the current relay and the voltage sampling circuit, the invention can relevantly control different electric potential grades between the return current rail and the earth, can enhance the protection response speed under the condition of a potential difference, also ensures a certain tolerance capability of the return current rail to short-circuit current and enhances the operational reliability of the device.

The invention provides a preparation method of a chlorine-resistant composite ceramic nano-filtration membrane. The ceramic nano-filtration membrane with good chlorine resistance is prepared by selecting traditional piperazine/trimesoyl chloride interfacial polymerization; reaction is carried out by utilizing an interface active group and a hydroxyl-containing macromolecular membrane material withthe good chlorine resistance to form an ester group with the good chlorine resistance; the macromolecular membrane material with the good chlorine resistance is introduced so that the tolerance performance of the nano-filtration membrane on sodium hypochlorite is ensured, and the high-interception performance on inorganic salt ions is obtained.

The invention discloses an iGMAS multi-analysis center and multi-satellite system precision orbit product integration method. For a same satellite system, a plurality of analysis centers provide the orbit data of each satellite in the satellite system, according to the orbit data, the preprocessing of a precision orbit product is performed, and an orbit value median of the same satellite in different analysis centers is selected as the initial integration orbit of the satellite. A similarity transformation equation is established between an analysis center orbit and an integration orbit. According to a least square principle, adjustment is performed, similar transformation parameters and a residual error are resolved, a weight function and variance component estimation method is used to estimate the weights of different types of satellites in each analysis center, and according to the weights, the integration orbit is calculated. An observation equation is re-established so as to resolve until convergence. In the invention, a system deviation among the orbit products of the different analysis centers of multiple satellite systems can be corrected so that the acquired integration orbit product can be ensured to possess high reliability, high robustness and high precision.

The invention discloses a flame-retardant insulated composite material and a preparation technology thereof. The flame-retardant insulated composite material comprises meta-amide paper, a temperature-resisting chemical film and meta-amide paper which are sequentially contacted. The preparation technology is characterized in that 1313 aramid chopped fiber, 1313 aramid fibrid, 1313 aramid pulp are effectively dispersed, subjected to two stages of squeezing and dewatering, drying and high-temperature plasticizing to obtain the meta-amide paper; a formed polyimide film (PI film) and or a polyethylene glycol terephthalate film (PET film) are uniformly coated with a layer of half-curing high-temperature epoxy glue, and then disposed on a high pressure compounding machine for composite forming, so as to obtain the temperature-resisting chemical film; and the temperature-resisting chemical film is disposed between two layers of the meta-amide paper, then coating and high-temperature gapless composite treatment are carried out, so as to obtain the flame-retardant insulated composite material. The flame-retardant insulated composite material has strong high temperature resistance performance and flame retardation performance for high voltages of different frequencies at 220 DEG C to 400 DEG C, so that the survivability of various electrical products can be ensured.

The invention relates to an insulating and flame retardant partition wall, which includes a skeleton and cement mortar painted on the surface of the skeleton. The skeleton includes a middle partitionplate, the left and right sides of the middle partition plate are symmetrically provided with steel meshes containing continuous protrusions, a U-shaped supporting plate is arranged between the protrusion part of each side of the steel meshes and the middle partition plate, a groove part of each side of the steel meshes is provided with a metal batten in the direction of the groove, and the metalbattens on the left and right sides are fixed through fixing bolts; the middle partition plate is prepared through an extrusion process, has very good insulating and flame retardant effects, and has acertain strength of supporting; the fact that a frame is arranged around the wall is not required, construction of walls with various sizes is more convenient, the main function of the U-shaped supporting plates is to strengthen support of the steel meshes and ensure the tolerance of the steel meshes, meanwhile the steel meshes have a basic fixing effect on concrete, and the construction difficulty of the concrete is reduced; and the metal battens ensure stability between the steel meshes and the middle partition plate, golden battens are arranged, the stressed area of the golden battens is large, and the service life of the steel meshes is prolonged.

The invention discloses an accurate positioning type forging and pressing device. The accurate positioning type forging and pressing device comprises a first motor, a workbench, an electric control box and a second positioning block. The workbench is provided with the first motor. A first lead screw is arranged on one side of the first motor and provided with a second sliding block. A second motoris arranged on the second sliding block. A second lead screw is arranged on one side of the second motor and provided with a first positioning block. A third positioning block is arranged on one sideof the first positioning block. A first sliding block is arranged on one side of the second sliding block and provided with a third motor. A third lead screw is arranged on one side of the third motor and provided with the second positioning block and a fourth positioning block, and the first positioning block, the second positioning block and the third positioning block are provided with workpieces. The accurate positioning type forging and pressing device has the beneficial effects that the workpieces can be well fixed, the position of a forging and pressing machine is not moved in the forging and pressing process, and tolerance of components is guaranteed.

A combination therapy of a cancer with a multi-specific binding protein that bind a tumor associated antigen, the NKG2D receptor, and CD16, in combination with a second anti-cancer agent are described. Also described are pharmaceutical compositions of the multi-specific binding protein, and therapeutic methods useful for the treatment of cancer in combination with a second anti-cancer agent.

The invention discloses a system update method and device. The method comprises that a uniform update packet is obtained from a server end, the uniform update packet includes all system files needed for update of systems to be updated, a system file needed for update of a present system to be updated is obtained from the uniform update packet according to function index information included in a preset function index packet of the present system to be updated, and the obtained system file is updated to a system update packet of the present system to be updated. According to the function index information included in the preset function index packets, the system to be updated can obtain the needed system files from the uniform update packet and update the obtained system files to the system update packets respectively; and thus, one uniform update packet can be used to carry out iteration and update on the systems to be updated of different models of terminals, tolerance for system change during update is ensured, and the maintenance cost for system update of the terminal is reduced greatly.

The invention discloses a method for remediating cesium-contaminated soil through forage grasses and a method for remediating cesium-contaminated soil through forage grasses and microorganisms, and relates to the field of heavy metal contaminated soil remediation. Forage grasses are planted on cesium-contaminated soil, and cesium in the cesium-contaminated soil is enriched through the forage grasses. The forage grasses are one or more of sorghum sudanense, hybrid pennisetum alopecuroides and Timothy. The germination rate and germination potential of the plants are investigated through early germination experiments, and the tolerance of plant seeds to Cs nuclide pollution is guaranteed. Furthermore, the plant height of the screened pasture plants is measured, the dry weight of the pasture plants at the end of vegetative growth is measured, various enrichment parameters are measured and calculated, and the Cs dominant enrichment plants are screened through comparison of multiple parameters. According to the method, three forage plants with high cesium enrichment capacity are screened out, and cesium-contaminated soil is remediated on the basis of the three forage plants. On the basis of remediating cesium-contaminated soil by forage grasses, remediation by forage grasses and microorganisms together is carried out.

The invention discloses a 3D switching type PCB. The circuit board comprises a PNL board and a PCB arranged on the PNL board. The PCB is provided with at least one inner groove, the edge of each innergroove is provided with an edge covering groove and a connecting position, the connecting positions are used for connecting the inner grooves and connecting the inner grooves and the PNL board, the PCB is reasonable in design, the edge covering grooves can reduce board edge radiation interference, and transmission of high-speed signals is guaranteed. The invention further provides a manufacturingmethod of the 3D switching type PCB, all the steps are easy to control, the problems of burrs and burrs of the edge covering groove are effectively avoided, the precision of the sizes and positions of the edge covering groove and the inner groove is improved, and the reliability of long-term use of a product is improved.