29results about How to "Closely arranged" patented technology

Provided in the embodiments of the present application is a megawatt parallel pipe type charging pile cable, specifically: the cable comprises a sheath assembly, a main power line, cooling pipes and core wires; wherein the cooling pipes are at least 4 in number; the sheath assembly covers the main power line, the cooling pipes and the core wires; the cooling pipes are arranged in close contact with the sheath assembly, and the cable is centrally provided with the core wires; the cooling pipes are distributed at equal intervals; the main power line comprises positive power lines and negative power lines, and the positive power lines and the negative power lines are arranged in one-to-one correspondence and symmetry; the positive power lines and the corresponding negative power lines are arranged in close contact with different cooling pipes, respectively. The present application adopts a multi-core split design for the main power line comprising positive power lines and negative power lines, each independent core wire is closely attached to the outer wall of the cooling pipe, heat conduction is strengthened through direct contact, and heat is efficiently transferred vertically to the cooling liquid.

This invention relates to a core-shell structured sodium iron phosphate pyrophosphate cathode material, its preparation method, electrode sheet, and battery, belonging to the technical field of methods or devices for directly converting chemical energy into electrical energy. The core-shell structured sodium iron phosphate pyrophosphate cathode material of this invention comprises primary particles, each primary particle including: a core, a sodium iron phosphate pyrophosphate shell layer disposed on at least a portion of the surface of the core, and a carbon coating layer located within the pores and on the surface of the sodium iron phosphate pyrophosphate shell layer; the core includes a NASICON-type sodium-ion inorganic solid electrolyte with an average particle size ≤50nm; the average thickness of the sodium iron phosphate pyrophosphate shell layer is ≤500nm; the chemical formula of the sodium iron phosphate pyrophosphate shell layer is Na₄Fe₂O₃. 3‑ x M x (PO4)2P2O7, 0≤x≤0.9, M is a doped metal element. The core-shell structured sodium iron phosphate pyrophosphate cathode material of this invention combines high solid density, high conductivity and good electrochemical performance.

This disclosure relates to a server node, a server, and a data center. The server node includes a housing and chip units, liquid cooling modules, liquid inlet modules, and liquid outlet modules, all disposed within the housing. There are multiple chip units, each including multiple first chips. There are also multiple liquid cooling modules, with each chip unit corresponding to one of the liquid cooling modules. Each liquid cooling module makes thermally conductive contact with the multiple first chips in its corresponding chip unit to cool the first chips. The liquid inlet and liquid outlet modules are spaced apart along the width of the housing, with the multiple chip units and liquid cooling modules located between the liquid inlet and liquid outlet modules. Each liquid cooling module is connected to both the liquid inlet and liquid outlet modules. This technical solution enables the rational arrangement of multiple chips and chip cooling-related components within a limited housing space.

This utility model discloses an antibacterial bamboo fiber spunlace fabric, including a spunlace fabric body and a structural layer. The absorbent layer of this utility model is made of sponge material, which increases the thickness of the spunlace fabric and has better water absorption, allowing it to retain more moisture. The mesh fabric can make the spunlace fabric body and the absorbent layer more firmly connected and make the spunlace fabric body less prone to tearing, thus improving the strength of the spunlace fabric body. The surface layer is made of interwoven bamboo fiber and hemp fiber, giving the surface a rough surface. The first fiber pad is made of polyester fiber yarn, which has high durability. The second fiber pad is made of cotton fiber, which has good water absorption and can also have a better cleaning effect on stubborn stains. The second cleaning layer is tightly arranged, and the finished product feels close to textiles, making the surface of the second cleaning layer softer, giving the spunlace fabric body a soft cleaning surface.

The utility model discloses a novel double piston mini cylinder body structure, its characterized in that, including cylinder body and set up inside the cylinder body and be used for realizing double -deck pressure boost's double piston structure and set up on the cylinder body with the valve needle cooperation of double piston structure, the inside of cylinder body is supported block and is divided into two complete working cavities, the working cavity is respectively upper piston cavity and lower piston cavity. The utility model has the beneficial effect that: the utility model adopts double piston design through compact layout, realizes higher performance under the same volume, two pistons can work synchronously, provides superimposed thrust, reduces the gas consumption through optimizing the gas circuit design (share intake valve), and the core value of double piston small cylinder is in through structural innovation, breaks through the performance bottleneck of traditional cylinder under the premise of miniaturization, has the power, precision and reliability, especially suitable for the demand of modern industry to high efficiency, intelligence, compact.

The application relates to a wiring mechanism which comprises a mouthpiece, a first structural member and a pressure adjusting assembly, the mouthpiece is used for being connected with a rotating mechanism for winding a wire on a workpiece to be wound, a first clamping part is arranged on the mouthpiece; the first structural member is arranged on the mouthpiece, a second clamping part is arranged on the first structural member, and the first clamping part and the second clamping part are matched for clamping the wire; the pressure adjusting assembly is arranged between the mouthpiece and the first structural member, and the pressure adjusting assembly is used for driving the mouthpiece to move so as to adjust the force applied by the first clamping part to the wire. In the wiring mechanism, the mutual cooperation among the mouthpiece, the first structural member and the pressure adjusting assembly enables the first structural member to apply a set force to the wire, so that the wire has a certain tension, and then the wire can be always hooked by the mouthpiece when wiring, and the wire can be closely arranged on a terminal when winding, thereby reducing the randomness and the defective rate during wiring.

The application discloses a kind of satellite transceiver's dual antenna radio frequency channel isolation circuit, comprising: circuit board, main input port, slave input port and signal processing chip;The input circuit of main input port is divided into two ways on the front of circuit board;First road passes to the back of circuit board and is divided into first subcircuit and second subcircuit;First subcircuit is connected to the back B3M frequency conversion processing circuit by first intermediate layer;Second subcircuit is connected with B1M frequency conversion processing circuit;Second input circuit passes to the back and is connected with auxiliary frequency conversion circuit;The input circuit of slave input port passes to the back and is divided into third input circuit and fourth input circuit;Third input circuit passes to the front and is connected with B3S frequency conversion processing circuit;Fourth input circuit is connected to the front B1S frequency conversion processing circuit by second intermediate layer.The present application carries out frequency conversion processing to slave input signal and main input signal respectively on the front and back of circuit board, reduces the direct coupling and radiation interference between signals.

This utility model discloses an isostatic pressing device for silicon nitride powder molding, including a conveyor. A sheathing tube is placed at the upper end of the conveyor, and a tube cover is installed at the upper end of the sheathing tube. A mounting plate is fixedly connected to one side wall of the conveyor. Two hydraulic cylinders are installed at the lower end of the mounting plate. Connecting plates are fixedly connected to the output ends of both hydraulic cylinders. A material hopper is fixedly connected to the opposite sides of the two connecting plates. A stirring shaft is rotatably connected to the top inner part of the material hopper. Multiple stirring rods are fixedly connected to the outer wall of the stirring shaft. A spiral blade is fixedly connected to the lower end of the stirring shaft. A through hole is opened at the upper end of the tube cover. The device incorporates a rotating disk, rack, and gears. Under the meshing transmission of the rack and gears, the sheathing tube can reciprocate, causing the powder inside to rearrange under the action of gravity and inertia, providing a uniform material base for subsequent isostatic pressing.

This invention relates to the field of oilfield chemical technology, and discloses a gemini surfactant, its preparation method, and its application. The gemini surfactant comprises the structure shown in Formula I, where R is a C1-C8 alkyl group or a C6-C8 aryl group; Y... ‑ SO3 ‑ M + The ions are alkali metal ions or alkaline earth metal ions; m = 1-30; n = 1-15. The gemini surfactant of this invention can be used as a viscosity reducer for heavy oil, exhibiting strong viscosity-reducing ability. Through the effective increase of the strength of the oil-water interface film via polyoxyethylene and polyoxypropylene segments, it has a good emulsifying effect, which is beneficial for the migration of oil-water emulsions in rock pores, expanding the swept area, significantly reducing residual oil saturation, and resulting in good oil displacement effect.

This utility model belongs to the technical field of cable winding and unwinding equipment, and particularly relates to an anti-tangling cable winding and unwinding device for electromechanical equipment. Addressing the problem that existing cable winding and unwinding devices cannot adjust the cable laying speed in real time according to continuous changes in the cable roll diameter during the winding process, leading to a mismatch between the laying speed and the winding speed, the following solution is proposed: It includes a winding rotor, a clamping rotor, a cable management plate, an adjustment drive box, a stepless speed regulation component, and a hydraulic synchronous adjustment mechanism. The clamping rotor is closely attached to the outside of the wound cable and moves gradually as the cable roll radius increases. A hydraulic synchronous adjustment mechanism is provided between the stepless speed regulation component and the winding rotor. This utility model senses changes in the cable roll diameter through the clamping rotor and continuously adjusts the laying speed via the hydraulic synchronous adjustment mechanism, ensuring that the conductor ring movement speed always precisely matches the winding speed under the current roll diameter. This achieves neat arrangement of the cable throughout the entire winding process and effectively prevents tangling and knotting.

This utility model relates to the field of building technology, specifically a steel-concrete composite joint with steel plates, including a pipe column and a matching pipe beam. Two sets of orthogonal members are arranged sequentially from top to bottom along the axial direction of the pipe column. Each set of orthogonal members includes two connecting plates that orthogonally pass through the pipe column. Both ends or either end of each connecting plate protrude from the outer wall of the pipe column to form a cantilever structure, with the upper connecting plate and its lower connecting plate protruding in the same manner. The upper connecting plate is inserted into the cavity of the pipe beam and is fixedly connected to the upper cavity wall. The lower connecting plate, which matches the upper connecting plate, is supported on the bottom surface of the pipe beam to form an upper-supporting-lower-top structure. Several sets of this upper-supporting-lower-top structure are arranged at equal heights along the circumference of the outer wall of the pipe column. This utility model ensures the compactness of the structure and the enhanced rigidity of the core area of ​​the joint, while also effectively guaranteeing its load-bearing capacity.

This utility model discloses an upper mold pressurization system based on a wet paper blank hot pressing equipment, relating to the field of paper forming technology. The utility model includes an upper mold fixing seat, a pneumatic device, a hydraulic device, and several guiding mechanisms. A connecting sleeve is fixed at the midpoint of the top surface of the upper mold fixing seat, and a circular constriction section is integrally connected to the top of the connecting sleeve. The hydraulic device is a hydraulic cylinder, vertically mounted on the top of the upper mold fixing seat and concentric with the connecting sleeve. The piston rod end of the hydraulic device passes through the constriction section and is fixed with a sliding column end. This utility model, through the design of a pressurization system combining pneumatic and hydraulic cylinders, can achieve multi-stage stepped pressurization. Low-pressure venting is achieved through pneumatic cylinder pressurization in the early stage of hot pressing, medium-pressure shaping is performed in the middle stage of hot pressing, and high-pressure compaction is performed in the later stage of hot pressing. Multi-stage pressurization can improve the gradual and dense arrangement of pulp fibers in the wet paper blank, reduce surface burrs, improve paperboard quality, and reduce subsequent polishing and coating costs.

This utility model relates to the field of pharmaceutical technology, specifically to a bottle feeding device for a drum-type bottle washing machine. It includes a base with a fixed seat on its bottom wall. A motor is mounted on one side of the inner bottom wall of the base. The output end of the motor is locked with a lead screw via a coupling, and the other end of the lead screw is rotatably connected to the inner wall of the base via a bearing. A connecting block is threaded onto the outer wall of the lead screw, and a connecting rod is mounted on the top wall of the connecting block, extending beyond the base. When the conveyor line stops, the pusher plate can push the bottles between itself and the baffle to the right, eliminating gaps. This solves the problem of excessive bottle spacing caused by unstable conveying speed, defects in the bottle feeding system, and differences in the bottles themselves, ensuring that the bottles are tightly arranged and continuously conveyed to the drum-type bottle washing machine, significantly improving conveying stability.

This application provides a flat ribbon cable for use in a formation and capacity testing device, and the device itself. The flat ribbon cable includes a ribbon cable, mating terminals, an insulating film, and a shielding layer. The ribbon cable includes multiple parallel conductors, at least one end of which is connected to a device in the formation and capacity testing device. The mating terminals are connected to one end of each conductor in the ribbon cable, and the conductors are connected to the device in the formation and capacity testing device via the mating terminals. The insulating film is adhered to the upper and lower surfaces of the ribbon cable to cover it. The shielding layer covers the outer layer of the insulating film opposite to the ribbon cable. Using a flat ribbon cable can shorten equipment assembly time, reduce wiring space, and effectively shield against external electromagnetic interference, ensuring high accuracy of sampling data obtained using the flat ribbon cable.

The utility model discloses a kind of stable hoist of avoiding steel wire rope winding, including hoist shell, the hoist shell is U-shaped, and hoist shell rear side is horizontally installed with rotating rod, the rotating rod inside is hollow ratchet structure, and rotating rod outside is installed with winding reel, the hoist shell front side is horizontally installed with two slide bars, and slide bar outside is connected and is installed with straight rack, straight rack upper end middle is fixedly installed with line arranging block, and line arranging block front and back side is penetrated and is set with wire hole, the left side of straight rack front side lower side is provided with first gear, and the right side of straight rack front side lower side is provided with second gear, and second gear bottom end is rotatably connected on the upper surface of hoist shell bottom plate. The stable hoist of avoiding steel wire rope winding slows down winding reel rotating speed in wire arranging process for steel wire rope to play elastic support, and simultaneously through the power source of winding reel drives line arranging block horizontal reciprocating movement to avoid steel wire rope winding disorder.

This invention relates to the field of power cable technology and provides a cross-linked polyethylene insulated power cable, comprising: a support strip with a hollowed-out insertion port in the middle and hollowed-out inner stress relief holes formed inside the support strip; by setting the inner stress relief holes, outer stress relief holes, and inner stress relief holes in the cable, sufficient deformation space is provided for the cable when bending, which can not only effectively alleviate the tensile stress on the outside of the bend and the wrinkling problem on the inside, but also form a multi-level buffer when subjected to external pressure, avoiding the defect of traditional cables being prone to cracking due to internal compactness; the close arrangement of the support strip, conductor, and filler strip ensures the compactness of the internal structure, while the reinforcing ribs inside the support strip significantly improve the tensile strength of the cable, preventing breakage due to excessive bending, and achieving a balance between stress relief and structural strength; in addition, the support strip and filler strip are pre-prepared using an independent extrusion process, which greatly improves the assembly efficiency and finished product delivery speed of the cable.

This utility model discloses a detachable sausage tube assembly and its sausage grilling machine, comprising: a sausage tube, plungers, rollers, and side frames. The sausage tube has a hollow cavity inside; the plungers are fitted into both ends of the hollow cavity; the rollers are axially connected to the two plungers, with one end of the roller rotatably positioned within a U-shaped groove, and the other end of the roller being drive-connected to the rotational drive mechanism of the sausage grilling machine. This utility model facilitates the removal of the sausage tube from the equipment, allowing for thorough cleaning of the surface of the sausage tube and areas inside the equipment prone to dripping and accumulating oil stains, ensuring the cleanliness of the sausage grilling machine and preventing food safety issues caused by bacterial growth. Furthermore, each sausage tube can be disassembled, cleaned, and replaced individually. Compared to the cumbersome replacement structure that required disassembling all sausage tubes together, this utility model is easier to disassemble, saves manpower, shortens maintenance time, and has a simpler structure.

The application relates to the technical field of medical equipment, and discloses an automatic medicine sorting system, which comprises a feeding connection unit, a sorting unit, a mechanical hand unit, an identification unit and a turnover unit.The feeding connection unit is used for receiving multiple medicine boxes and conveying the multiple medicine boxes to the sorting unit.The sorting unit is provided with a sorting area and a 3D visual positioning module.The mechanical hand unit is used for grabbing a single medicine box to the identification unit.The medicine box is transferred to a stacking unit in the case that the current posture of the medicine box meets preset stacking rules.The medicine box is transferred to the turnover unit in the case that the current posture of the medicine box does not meet the preset stacking rules.The identification unit is used for scanning the medicine box to obtain coding information and identifying the position and posture of the medicine box.The turnover unit is used for performing a turnover operation on the medicine box which does not meet the preset stacking rules.The stacking unit is used for providing a stacking space for the medicine box to be stacked.The embodiment of the application can make different sizes of medicine boxes in the stacking basket closely arranged in a relatively regular posture, and effectively improves the space utilization rate of the stacking basket.

This invention relates to the field of air conditioning technology, and discloses an air intake noise reduction structure and an air conditioning range hood. The air intake noise reduction structure includes: an air intake plate with an air inlet; and a noise reduction channel disposed within the air inlet. The noise reduction channel includes noise reduction holes formed inside the air intake plate and a guide channel connecting the noise reduction holes and the air inlet. The guide channel has a guide surface suitable for gradually guiding the airflow and / or sound waves entering from the air inlet to the noise reduction holes. The air conditioning range hood includes: a main air inlet on a smoke hood; and an auxiliary air inlet on the smoke hood, on which the aforementioned air intake noise reduction structure is installed. This invention, without changing the size of the air inlet area, guides the airflow and sound waves entering from the air inlet to the noise reduction holes of the air intake plate through a guide channel set on the inner circumference of the air inlet. The noise reduction holes utilize multiple reflections of noise at the air inlet to dissipate sound wave energy, thereby achieving noise reduction.

This invention relates to the field of battery technology, specifically providing a dry-process lithium replenishment equipment to address the high risk associated with existing lithium replenishment equipment. To this end, the dry-process lithium replenishment equipment of this invention includes a feeding device, a film processing roller mechanism, a first spraying mechanism, a second spraying mechanism, and a film composite roller mechanism. The film processing roller mechanism can form a first film and a second film from the negative electrode fibrous active material. The first and second spraying mechanisms can spray an adhesive and inert lithium powder onto the surfaces of the two films, which are then composited by the film composite roller mechanism to form a lithium-containing film. This configuration allows the lithium replenishment equipment of this invention to form a lithium-containing film from the negative electrode fibrous active material and inert lithium powder. In practical applications, the lithium-containing film is then adhered to the negative electrode current collector to form a lithium-replenishing electrode sheet. This results in low risk and high efficiency in lithium replenishment. The lithium powder layer is sandwiched between the two films, thus providing effective protection for the lithium powder layer.

This application discloses a target shooting device, belonging to the field of shooting training equipment. The target shooting device includes a frame with a mounting groove at the rear. Two arc-shaped plates are symmetrically arranged inside the mounting groove, enclosing the opening of the frame to form a target shooting port for bullet firing. Multiple crossbars are rotatably arranged in the mounting groove corresponding to the target shooting port, and the crossbars are evenly spaced along the vertical direction of the mounting groove. An elastic target plate is arranged between two adjacent crossbars, and a sleeve is fixedly connected to the top of the target plate. The sleeve is rotatably fitted onto the crossbar. When a bullet is fired onto the target plate, the target plate rotates counterclockwise around the crossbar through the sleeve to form a certain angle. The friction between the sleeve and the crossbar keeps this angle constant, thereby displaying the bullet impact point. This structural design can accurately display the bullet impact point, making it easier for trainees to accurately read the shooting direction and improve the accuracy of hit rate statistics.

This invention belongs to the field of fuel cell thermal management technology, and particularly relates to a battery cooling system and its control method based on a microtube bundle heat exchanger and countercurrent collision jet atomization. The system includes: a fuel cell stack, a microtube bundle heat exchanger connected to the fuel cell stack via a coolant circulation loop, a cathode drainage recovery unit, and a countercurrent collision jet atomization unit comprising a fan and an atomizing spray module. The fan, atomizing spray module, and microtube bundle heat exchanger are arranged sequentially. The airflow direction generated by the fan rotation and the direction of the water mist sprayed by the atomizing spray module are opposite to each other, so that the water mist sprayed by the atomizing spray module initially moves towards the direction of the fan. After its speed decreases to zero, it is driven by the airflow generated by the fan to move in the opposite direction and flows through the gaps within the microtube bundle heat exchanger, serving as shell-side fluid to cool the tube-side fluid within the microtube bundle heat exchanger.

The application relates to a high-density battery structure which comprises a top cover, a box body, a battery cell module, a protection plate and a panel; the battery cell module is arranged in the box body; the top cover covers the top of the box body; the panel covers the end face of one end of the box body, and the panel is arranged in abutment with the top cover; the battery cell module comprises a first battery cell module, a second battery cell module and a third battery cell module; the first battery cell module and the second battery cell module are adjacently and symmetrically arranged; the third battery cell module is arranged close to the panel; and the protection plate is arranged on the top of the third battery cell module. Through the structure, the problems of heat of the battery cell module and insufficient space of the box body can be effectively solved. The application has the advantages of simple structure, convenient disassembly and assembly, easy maintenance, long service life of the battery, high practicability and economy, wide application range, and can be produced and used as a general product.

The utility model discloses a kind of transport devices of automobile parts, it is related to automobile parts transport technical field, including base, mobile wheel is installed in base both sides, base top is fixedly connected with placing box, symmetrically sliding connection has baffle in placing box interior, mobile assembly is installed in placing box both sides, symmetrically opening has guide groove in placing box interior bottom end, baffle bottom embedded rotatably connected with guide wheel, guide wheel and guide groove are slidingly connected, push handle is fixedly connected with symmetry in placing box side, antiskid pad is fixedly sleeved in push handle outside.The utility model uses the above structure, can be accurately divided to transport space according to the actual size of part, so that different specifications of parts can be closely arranged, fully utilize the internal space of transport device, improve single transport capacity, reduce transportation cost, and by adjusting baffle, different parts are placed in partition, realize classification management, facilitate identification, counting and inspection to part in the process of transportation.

The application provides a packaging structure and a power module, which comprise a substrate, the substrate comprises an upper bridge region and a lower bridge region which are arranged at intervals along a first direction, the upper bridge region comprises upper bridge chip welding areas and upper bridge gate lead-out areas which are arranged at intervals, and the lower bridge region comprises lower bridge chip welding areas, a bus negative terminal welding area, lower bridge gate terminal welding areas and lower bridge source terminal welding areas which are arranged at intervals, the application sets the positional relationship of the upper bridge chip welding areas, the upper bridge gate lead-out areas, the lower bridge chip welding areas, the bus negative terminal welding area, the lower bridge gate terminal welding areas and the lower bridge source terminal welding areas in the substrate, so that the flowing directions of the current of the upper bridge region and the current of the lower bridge region in the packaged device are opposite, the current loop area is small due to the compact arrangement between the chips, the current of the upper bridge region and the current of the lower bridge region are relatively close, and the principle of magnetic field cancellation is used to reduce the parasitic inductance in the current loop.

The application relates to the technical field of mineral spring mineralization equipment, in particular to a filter core device and a mineral spring mineralization equipment with the same. The filter core device comprises a device main body, the device main body has a shell, a first space and a second space are arranged in the shell in the axial direction, a mineralization cavity and a second buffer cavity are arranged in the second space, a mineralization filter core is arranged in the mineralization cavity; a first buffer cavity is arranged in the first space; the mineralization cavity and the second buffer cavity are arranged in the radial direction of the shell, or the second buffer cavity and the mineralization cavity are arranged in the radial direction of the shell; the first buffer cavity and the mineralization cavity are provided with a first pressure conduction structure which can be conducted under the action of water pressure; a second pressure conduction structure which can be conducted under the action of water pressure is arranged between the mineralization cavity and the second buffer cavity, the mineralization water concentration flowing out of the filter core can be effectively prevented from exceeding the standard, the user can be prevented from drinking the mineralization water exceeding the standard, and the safety and reliability are relatively good.

This utility model discloses a vibration assembly and a high-frequency vibration curing device for soft soil, relating to the field of vibration compaction technology. It includes: at least one vibrating rod connected in series, each end of which has a matching first internal thread groove and a first external thread section. A first electrode interface, capable of electrical connection through contact, is provided between the bottom of the first internal thread groove and the top of the first external thread section. The first electrode interface is used to rotate a centrifugal rotor inside the vibrating rod. An insulating protective sleeve is connected to the end of the vibrating rod and is used to enclose the first internal thread groove or the first external thread section at the end of the vibrating rod. Using this solution, water and soil can be separated sequentially in the silt layer and soil layer using a specific vibration frequency and arrangement of the vibrating rods, achieving efficient and economical soft soil foundation treatment.

This application proposes a water softener, comprising: a housing having a first receiving cavity for holding brine; a resin tank vertically disposed within the first receiving cavity for softening hard water; and a valve control assembly disposed within the first receiving cavity for controlling the on / off connection between the first receiving cavity and the resin tank, and for controlling the on / off connection between the resin tank and an external water supply device, wherein the valve control assembly and the resin tank are arranged side-by-side along the length of the housing. This design achieves full utilization of the horizontal space of the housing without increasing its length, improving the utilization rate of the horizontal space and avoiding excessive occupation of the vertical space of the housing. This significantly reduces the overall height of the water softener, making it smaller and more suitable for miniaturized design.