212results about How to "Reduce material costs" patented technology

The invention relates to the technical field of plasma electric flame stoves, in particular to a system for supplying nitrogen through centralized air separation for an electric flame stove and a working method. The system comprises an air compression and pretreatment unit, a pressure swing adsorption separation unit, a nitrogen buffer pressure stabilization unit, a nitrogen distribution conveying pipe network, a user side regulation and control unit and at least one electric flame stove which are sequentially connected in the gas flow direction. According to the invention, through centralized nitrogen generation and pipeline distribution, the problem of large-flow nitrogen supply of dispersed users is solved, and the emission of nitrogen oxides is greatly reduced due to the use of oxygen-free nitrogen by the electric flame stove. According to the system, indoor oxygen supplementation of oxygen-enriched gas and domestic hot water recovery of compressed waste heat are achieved at the same time, and the comprehensive utilization efficiency of resources is improved; by adopting the carbon steel pipe net, the construction cost is reduced, and nitrogen with different purities can be flexibly produced to meet multiple requirements; and real-time matching of nitrogen supply and stove power is realized through intelligent flow control of a user side, and stable and efficient operation is guaranteed.

The invention discloses a container structure and a manufacturing method thereof. The container structure comprises a wall frame and a bottom frame. The underframe comprises a bottom side beam, an end bottom beam and a steel floor; the bottom side beam and the end bottom beam are respectively provided with a first connecting surface and a second connecting surface which extend along the horizontal direction; wherein the extension directions of the first connecting surface and the second connecting surface are opposite, and the second connecting surface extends towards the inner side direction of the wall body frame; the first connecting face and the second connecting face are used for being welded and fixed to the wall frame and the steel floor correspondingly. Through the arrangement, a bottom cross beam does not need to be arranged, so that the material cost of steel is correspondingly reduced, the number of welding beads can be reduced, the labor cost and operation difficulty of welding operation are reduced, the production efficiency is improved, meanwhile, the water leakage risk caused by welding bead sealing defects is effectively reduced, and the water tightness requirement of the water storage type container is met.

The invention discloses a residual gas treatment device of a hydrogen peroxide sterilizer, and relates to the technical field of gas treatment devices.The residual gas treatment device is technically characterized by comprising a treatment shell, a gas inlet pipe is fixedly connected to one side of the treatment shell, an exhaust pipe is fixedly connected to the upper end of the treatment shell, and a filtering assembly is arranged on one side of the gas inlet pipe; a plurality of catalyst plates distributed in a crossed mode are fixedly connected to the inner wall of the treatment shell, a preheating assembly is fixedly connected to the outer side wall of the treatment shell, the filtering assembly comprises a filtering box, a filtering net is installed on the inner wall of the frame, and a baffle is fixedly connected to one side of the filtering net; a cleaning assembly is arranged on the inner wall of the filter box and located on one side of the filter screen. Residual gas entering the treatment shell is preliminarily filtered through the filtering assembly, impurities such as solid particles in the gas can be effectively intercepted, pore channel blockage and active site loss caused by the fact that the impurities make contact with the catalyst plate are avoided, and it is ensured that the catalyst plate is always kept in an efficient catalysis state.

The application discloses a quaternary solid waste-based soil stabilizer (GSCP) for a base layer, which is composed of slag (GGBFS), steel slag (SSA), calcium carbide slag (CS) and phosphogypsum (PG) and has a weight ratio of GGBFS:SSA:CS:PG=56:24:12:8. The stabilizer forms C-S-H colloid and ettringite (AFt) through alkaline activation and sulfate activation, does not need to add cement or chemical activator, is used for stabilizing silty clay and steel slag mixed soil, and significantly improves the unconfined compressive strength, splitting tensile strength, water stability and freeze-thaw resistance. Compared with a traditional cement-based stabilizer, the application reduces carbon emission by 82% and cost by 31.25%, provides a low-carbon and economical solution for road engineering, and is suitable for the base layer and the subbase layer of a secondary road or above.

The utility model discloses an iron nail polishing machine relates to iron nail polishing technical field, the utility model discloses a position switching drive assembly drives double board mounting assembly rotation, makes sealing plate and sieving plate side surface of sticking cylinder slide, make sealing plate or sieving plate cover import and export or make import and export completely expose, when import and export are located downside and are covered by sieving plate, the powder of auxiliary material and iron nail scrap produced in polishing process can pass through sieving plate and fall in the powder box, realize the quick filtration to auxiliary material, save time and effort, when import and export are located upside and completely expose, through the cooperation of front and back movement subassembly, electric telescopic pole and electromagnet, the iron nail after polishing in cylinder interior is adsorbed on the surface of electromagnet and shifts to the iron nail box, can separate the iron nail after polishing with the polishing auxiliary material quickly, make the polishing auxiliary material after filtration be retained in cylinder for subsequent polishing use, realize the quick filtration and continuous use to polishing auxiliary material.

The utility model discloses a kind of paint spraying equipment for ship parts, the utility model relates to paint spraying equipment technical field.It is including: liquid storage shell, the top of the liquid storage shell is fixedly connected with recovery assembly, the inner wall of the liquid storage shell is fixedly connected with spray assembly;The spray assembly includes stepper motor, the top of the stepper motor is fixedly connected with rotating shaft, the outer wall of the rotating shaft is fixedly connected with fixed rod, and the fixed rod is along the central axis of rotating shaft annular array arrangement, the top of the fixed rod is rotatably connected with rotating rod, this paint spraying equipment is by setting spray assembly, fixed rod makes circular motion with rotating shaft, and the paint spraying angle of spray head can be adjusted by rotating rod, limit disc, plug post and top spring etc. Component, so that spray head can realize all-around paint spraying to ship parts, and this paint spraying equipment reaches the purpose of paint spraying equipment for ship parts.

This utility model discloses a light-powered hair styling device. The device includes a main unit, a curling tube, a light-emitting lamp, and a PCBA control board. The curling tube is connected to the main unit, and the light-emitting lamp is located inside the curling tube. The light-emitting lamp is connected to the PCBA control board via a conductive wire, and an isolation bracket is provided between the light-emitting lamp and the conductive wire. By adding an isolation bracket between the light-emitting lamp and the conductive wire, this utility model utilizes the physical barrier effect of the isolation bracket to block the direct transmission of infrared rays emitted by the light-emitting lamp to the high-temperature radiation conductive wire. The isolation bracket forms a "radiation barrier," preventing high temperature and infrared rays from directly acting on the outer sheath of the conductive wire, delaying the aging, softening, and burning of the outer sheath, effectively avoiding safety accidents such as short circuits and electric shocks, and improving the long-term reliability of the light-powered hair styling device.

The utility model discloses a cover plate assembly and a battery cell module, the cover plate assembly comprises a cover plate main body, a pole and a fixing assembly, the cover plate main body is provided with a first through hole, the pole comprises a pole plate body and a pole main body, the first end of the pole main body is connected with the pole plate body, the second end of the pole main body penetrates through the first through hole, and the fixing assembly is arranged on the pole plate body. The cover plate body extends to one side, far away from the pole plate body, of the cover plate body; the part of the pole main body on one side, far away from the pole plate body, of the cover plate main body is fixed through a fixing assembly; the fixing assembly is made of solid metal. The first through hole with the hole diameter larger than that of the pole main body is formed, so that the pole main body penetrates through the first through hole, the pole main body and the cover plate main body are locked through the fixing assembly on the side, away from the pole plate body, of the pole main body, and the fixing assembly made of metal is higher in structural strength and easy to fix and install; and auxiliary structures such as a riveting die are not needed, so that the assembly difficulty and cost of the cover plate assembly are reduced.

The utility model discloses a self-lubricating sealing support mechanism, which comprises a transmission sealing sleeve, a support sleeve, a sealing cover, a bearing, a first sealing ring and a second sealing ring, the support sleeve and the sealing cover are respectively sleeved outside a transmission shaft and are detachably connected together, the transmission sealing sleeve is sleeved between the transmission shaft and the support sleeve, and the bearing is arranged on the support sleeve. The transmission sealing sleeve, the supporting sleeve and the sealing cover jointly limit the bearing arranged outside the transmission shaft in a sleeving mode, the bearing is communicated to an oil cavity of the gear oil tank, the first sealing ring is sealed between the transmission shaft and the transmission sealing sleeve, the second sealing ring is sealed between the transmission sealing sleeve and the supporting sleeve, the bearing does not need to be lubricated manually at regular intervals, and the working efficiency is improved. And self-lubrication of the bearing can be realized.

The utility model discloses a kind of deformation self-adapting anti-seepage structures of embankment linking section, including embankment, embankment crossing building, the side pier both sides of embankment crossing building located in embankment are provided with concrete spur wall, concrete spur wall outside and intermediate position are reserved with notch, flat plate type plastic steel sheet pile is horizontally inserted into notch and is set, the undisturbed soil layer of embankment is formed with undisturbed soil layer by in-situ mixing, wave type plastic steel sheet pile is horizontally inserted into undisturbed soil layer by in-situ mixing, flat plate type plastic steel sheet pile and wave type plastic steel sheet pile are flexibly linked to form composite anti-seepage structure type by using lock catch, can solve linking section leakage problem, improve engineering full life cycle safety, with deformation coordination, construction controllability and anti-seepage reliability and other technical features.

The utility model discloses a flexible circuit board and an intelligent terminal, the flexible circuit board comprises at least two conductive layers and insulating layers, the at least two conductive layers and the insulating layers are laminated along the thickness direction of the flexible circuit board, and at least one insulating layer is distributed between any two adjacent conductive layers; the material of the insulating layer adjacent to at least one conductive layer is different from the material of the remaining insulating layers. According to the flexible circuit board, various different signals can be transmitted at the same time, and the integration level of the circuit board is improved.

This utility model discloses a vehicle energy-absorbing box, comprising: a fixing plate for fixing to the frame of a bus; a cylindrical first upright plate on the upper surface of the fixing plate; a collision plate on the upper part of the first upright plate; multiple arc-shaped holes distributed circumferentially on the outer peripheral wall of the first upright plate, the arc-shaped holes spirally arranged from bottom to top along the outer peripheral wall of the first upright plate; a second upright plate disposed inside the first upright plate, the second upright plate being perpendicular to the fixing plate; and multiple notches spaced vertically on the two opposite side walls of the second upright plate, the openings of the notches facing the inner wall of the second upright plate. This vehicle energy-absorbing box has a simple structure, and the arc-shaped holes on the first upright plate and the notches on the second upright plate guide the first and second upright plates to rotate and deform upon collision, which is beneficial for better absorption of collision energy.

The utility model relates to the technical field of elevator call-out, and discloses an elevator call-out device which comprises a panel and an assembly hole, a circuit board is fixedly installed inside the panel, a first LED lamp bead is fixedly installed at the top end of the front end of the panel, and a second LED lamp bead is arranged at the bottom end of the first LED lamp bead. The elevator call-out device is provided with the panel and other parts; a traditional LED segment code display module is replaced with an LED and lampshade surface paste, and the LED segment code display module has the advantages of being low in material cost, free in shape and size, diversified in display content, light and thin in design, simplified in assembly, low in maintenance cost, optimized in uniformity, high in contrast ratio, diversified in color, reliable and expansible. The LED segment code display module can exceed a traditional segment code module in the aspects of cost, design freedom degree and function expansibility, is particularly suitable for product schemes pursuing differentiation and high cost performance, and solves the problem of improvement of the traditional LED segment code display module in the aspects of cost, design freedom degree and function expansibility.

The invention relates to the technical field of biology, in particular to an SNP (Single Nucleotide Polymorphism) molecular marker related to soybean mosaic virus resistance, an amplification primer and application of the SNP molecular marker in soybean breeding. The SNP molecular marker is located at the 910489bp site of a No.7 chromosome of a soybean genome, and the polymorphism of the SNP molecular marker is C / A. The invention provides application of the SNP molecular marker related to the soybean mosaic virus resistance in identification or auxiliary identification of the soybean mosaic virus resistance. By providing the accurate, simple, convenient and low-cost SNP molecular marker and the detection method thereof, early-stage, rapid and efficient molecular-assisted selection of soybean mosaic virus resistance characters is realized, so that the breeding process of a new variety of disease-resistant soybeans can be remarkably accelerated, and the SNP molecular marker has important breeding application value.

The utility model discloses an ultrathin liquid tank filter relates to filter technical field, this ultrathin liquid tank filter, including first section bar, and first section bar is provided with a plurality, the corner of first section bar is provided with second section bar, the lower extreme of second section bar is provided with third section bar with the connecting place of first section bar, and second section bar and third section bar all are provided with a plurality, first section bar includes first vertical board, the top of first vertical board is provided with first roof, first vertical board's bottom one side surface is provided with first support bottom plate, and the corner of one side of first roof one end forms the connecting gap between first vertical board, and the scheme has solved the total thickness of existing liquid tank filter generally above 40mm, can not realize installation in the narrow equipment environment, and the installation structure is too many due to spare part, leads to the thickness of liquid tank filter to be difficult to reduce, and the problem of complicated installation.

The invention discloses an image sensor control method and device and a computer readable storage medium, the method is applied to an on-chip system, the on-chip system is integrated with a microprocessor and an application processor, and the method comprises the steps that the microprocessor receives an image acquisition instruction sent by the application processor; and in response to the image acquisition instruction, the microprocessor controls the image sensor to perform image acquisition so as to obtain image data. In this way, low-cost image acquisition control can be realized.

This invention proposes a pre-embedded unloading pull ring structure at the connection node between a cast-in-place beam and a cantilever slab. The structure includes a beam body, with a cantilever slab body extending from the bottom of the beam body. A pull ring body is located at the bottom of the beam body, with one end embedded within the beam body and the other end protruding from the connection node between the beam body and the cantilever slab body. By pre-embedding the pull ring body at the bottom of the beam body and having one end protrude from the connection node, this invention eliminates the need for pre-drilling openings in the cantilever slab body. This ensures that the subsequently connected steel wire rope is in a straight line, optimizing the stress distribution between the steel wire rope and the structural beam, reducing the risk of structural damage. Simultaneously, it avoids conflicts, wear, and pressure damage to the cantilever slab caused by inaccurate opening locations, eliminates the risk of leakage due to openings, improves the safety, durability, and waterproofing performance of the cantilever slab, simplifies construction steps, and increases construction efficiency.

The utility model discloses a miniature light-weight seat backrest lock which comprises a metal lock box, a protective cover is installed on the surface of the metal lock box, positioning bolts are rotatably installed on the two sides of the protective cover, a first lock plate is rotatably installed on one side of the interior of the metal lock box, a second lock plate is rotatably installed on the other side of the interior of the metal lock box, and a locking groove is formed in one side of the metal lock box. A first limiting groove is formed in one side of the locking groove, a first extrusion part is arranged on one side of the first limiting groove, a second limiting groove is formed in one side of the second locking piece, and a second extrusion part is arranged on one side of the second limiting groove. The backrest lock has the advantages that through mutual transmission between the first locking plate and the second locking plate, after rotation, the side surface of the first extrusion part can be matched with the second limiting groove, the side surface of the second extrusion part can be matched with the first limiting groove, free opening and closing of the backrest lock are achieved, and the backrest lock is simple, compact, easy to operate and high in practicability. And not only is the assembly complexity in the manufacturing process reduced, but also the material cost and the production cost are effectively reduced.

The invention designs a heat dissipation device and a communication system. The heat dissipation device comprises a base body, fins and an ion wind module. The ionic wind module at least comprises a discharge structure and an alternating current power supply, the discharge structure at least comprises a first electrode, a second electrode and a dielectric layer, at least part of the first electrode is exposed in the external environment, and at least part of the second electrode is embedded into the dielectric layer to form an electrode module; one of the first electrode and the second electrode is electrically connected with the positive electrode of the alternating current power supply, the other electrode is electrically connected with the negative electrode of the alternating current power supply, ionic wind can be generated between the first electrode and the second electrode, the heating element is cooled through the ionic wind, and compared with natural convection cooling, the heat dissipation efficiency of the heat dissipation device on the heating element is improved; compared with fan cooling and ion wind cooling, noise generated during operation of the heat dissipation device is reduced, the working stability of the heat dissipation device is improved, the maintenance frequency of the heat dissipation device is reduced, the maintenance period is shortened, and the maintenance cost of the heat dissipation device is reduced.

The utility model provides a kind of multifunctional cold aisle end door door frame sealing plate assembly of tool-free opening, belong to data center cold aisle technical field, including, cabinet body;Sunroof component, the sunroof component is fixed in the top of cabinet body;End door door frame, the end door door frame is provided with two, two the end door door frame left and right distribution setting, the back of end door door frame is fixedly connected via screw and cabinet body;Tempered glass door component, the tempered glass door component is fixed in the top of two end door door frames;Sealing plate mounting frame, the sealing plate mounting frame is installed in the front side of end door door frame.The utility model solves the problem that operating personnel needs to provide ladder, must take away ladder after construction is completed, it is very inconvenient to carry ladder and ride traffic tool, sometimes only can be rented or purchased in project local, and it needs someone to stand in lower support and guardianship when using, thus it will necessarily increase the cost of construction of material and manpower.

The utility model provides a battery pack, comprising: a box body comprising a plurality of side box plates, and the plurality of side box plates enclose to form an accommodating space; the battery cell group module is arranged in the accommodating space; the battery cell group module comprises a plurality of battery cell stacking bodies, a plurality of connecting beams and two side plate groups; the plurality of battery cell stacking bodies are arranged along a first direction, and each battery cell stacking body comprises a plurality of battery cells stacked along a second direction; connecting beams are arranged at the two ends, distributed in the first direction, of each battery cell stacking body; the two side plate groups are located on the two sides, distributed in the second direction, of the battery cell stacking body, and the two side plate groups are connected through the connecting beam and clamp the battery cell stacking body; and in the second direction, the distance between the two side plate sets is adjustable, so that the two side plate sets can be matched with the corresponding side box plates for limiting. In the battery pack provided by the invention, the side plate groups and the side box plates are matched for limiting, so that the material cost of the battery pack is reduced, and the assembly process of the battery pack is simplified.

This invention belongs to the field of water electrolysis for hydrogen production technology, and specifically relates to an electrolyzer. It includes a sealing element, electrode I, a diaphragm, electrode II, and bipolar plates. The two bipolar plates are sealed together by the sealing element. The diaphragm is disposed between the two bipolar plates, with two reaction chambers formed on each side of the diaphragm. Electrode I and electrode II are respectively disposed within the two reaction chambers. The bipolar plates are provided with an inlet and an outlet. The sealing element has an inlet channel and an outlet channel for connecting the reaction chambers with the inlet and outlet. This invention combines the bipolar plates and the electrode frame into a single fabricated component, eliminating the welding process between the electrode frame and the electrode plates. Furthermore, because this invention does not use a thick electrode frame, it significantly reduces the material and processing costs of the electrode frame.

A sand core mold includes an upper core box and a lower core box integrally formed. The upper core box includes a first side and a second side opposite to each other in a first direction. The first side has a sand injection hole, and the second side is recessed to form a first sand mold groove. The lower core box includes a third side and a fourth side opposite to each other in the first direction. The third side is recessed to form a second sand mold groove. The second sand mold groove and the first sand mold groove form a cavity, which communicates with the sand injection hole. Along the first direction, the size of the cavity in the second direction gradually increases from the end closer to the first side to the end closer to the fourth side. The first direction is perpendicular to the second direction. In this application, by integrally forming the upper and lower core boxes, the number of core boxes is reduced, the mold design and manufacturing cycle is shortened, thereby reducing material and processing costs. The cavity forms a draft angle with a reverse slope, so demolding can be completed simply by separating the upper and lower core boxes, reducing the breakage rate of the sand core.

The application discloses a kind of gas sensor based on Fano resonance and its gas detection method, and the gas sensor is composed of phononic crystal circular sheet, circular piezoelectric sheet, rectangular air cavity and barometer;The front and back of rectangular air cavity are open and fixed acrylic plate;Two circular holes are opened on the left and right side plates of rectangular air cavity, two circular holes are fixed and closed by phononic crystal circular sheet, and the outer surface of one side phononic crystal circular sheet adheres circular piezoelectric sheet;The inner surface of the top plate of rectangular air cavity is fixed with barometer.The application realizes that the normal frequency of the gas to be measured in rectangular air cavity in the left and right direction of rectangular air cavity and the normal frequency in the height direction of rectangular air cavity are close, so that two normal modes appear and coupling occurs, Fano resonance is generated, after sweep excitation is sent by signal generator, the sound pressure spectrum in rectangular air cavity is obtained by measuring sound pressure through barometer, so as to judge gas composition.

The application discloses a kind of carbon fiber composite material defect repair equipment and repair method, it is related to gas cylinder repair equipment field, technical scheme is, including chassis, the middle part of chassis is set through passage, the lower portion of passage is set for supporting the support mechanism of carbon fiber gas cylinder, the upper surface of chassis one side parallelly arranged two slide rails, each slide rail is slidably connected with a slider, the clamping mechanism for clamping carbon fiber gas cylinder is fixedly arranged on slider, the middle part of clamping mechanism is set inflation passage, the inflation passage is coaxial with the axis of carbon fiber gas cylinder with gas inlet;The side of chassis is fixedly set main push rod;It further includes the guide rail fixedly set in the side of chassis, the repair mechanism for carbon fiber composite material repair is slidably arranged on guide rail.The beneficial effects of the application are: simple structure, convenient to use, fast repair speed, effectively shorten the repair time of carbon fiber gas cylinder, improve repair efficiency, reduce manpower and material cost.

This utility model discloses a mechanical extension structure for a sofa, including a base, a drive unit, two bases for mounting the seat cushion structure, and extension units respectively mounted on the two bases. The extension unit includes a leg assembly, a swing mechanism, and a backrest assembly. The swing mechanism includes a front support rod, a middle connecting rod, a rear support rod, a front swing rod assembly, a connecting rod assembly, and a rear swing rod assembly. One end of the front support rod and one end of the rear support rod are respectively hinged to the middle connecting rod, and the other end of the front support rod and the other end of the rear support rod are respectively hinged to the base. The middle connecting rods of the two swing mechanisms are connected by a synchronizing rod. The front swing rod assembly includes a front main swing rod with one end hinged to the base and a front auxiliary swing rod with one end hinged to the middle connecting rod. The front main swing rod and the front auxiliary swing rod are hinged together. The rear swing rod assembly includes a rear main swing rod with one end hinged to the base and a rear auxiliary swing rod with one end hinged to the middle connecting rod. The rear main swing rod and the rear auxiliary swing rod are hinged together. The front swing rod assembly is connected to the rear swing rod assembly through the connecting rod assembly.

The utility model discloses a plum blossom contact and vacuum circuit breaker, including a plurality of installation on the support ring aluminum contact patch, each aluminum contact patch two two combinations form a pair of contact patch group, and each contact patch group presents ring shape and evenly arranged on the support ring, and there is no vacancy between the inside end of adjacent contact patch group. The plum blossom contact of the utility model can evenly and closely arrange each contact patch group, so that there is no obvious vacancy between the adjacent contact patch groups, the contact part of the plum blossom contact is formed into a whole circle type contact structure by each aluminum contact patch, thereby effectively improving the contact stability of the plum blossom contact, greatly reducing the probability of contact failure of the plum blossom contact, and the aluminum contact patch of aluminum material can effectively reduce the material cost compared with copper material, avoid material resource waste, and achieve the effect of cost reduction.

The diaphragm electromagnetic valve claimed in the application comprises a coil framework, a magnetic conductor and a valve body, and a clamping positioning part is formed on the coil framework; the magnetic conductor comprises a first plate body, a second plate body and a connecting plate body, the connecting plate body is arranged between the first plate body and the second plate body and is connected with the first plate body and the second plate body respectively, wherein a clamping groove is formed on the first plate body, the first plate body is inserted into the clamping positioning part through the clamping groove, and the magnetic conductor is assembled and positioned on the coil framework in this way; the valve body is connected to the first plate body and abuts against the clamping positioning part to limit the position, so that the assembly and connection between the coil framework, the magnetic conductor and the valve body can be realized. In this way, the structure of the magnetic conductor is simplified, and the material cost and assembly cost of the magnetic conductor are reduced; moreover, the precise positioning during the assembly of the magnetic conductor and the coil framework can be realized, which is beneficial to the consistency of the diaphragm electromagnetic valve product.

The application provides a soil organic carbon estimation method based on a Sentinel-2 image, and steps include sample collection, remote sensing data processing, feature screening, model building, training and testing, and optimal model inversion. The application aims to solve the problems of insufficient precision and interpretability of existing estimation methods, and constructs a high-precision estimation technology system that fuses multispectral data and stacking model algorithms. Only small-scale sample collection is required to train the model, without the need for repeated field sampling and laboratory analysis, which greatly reduces the cost, has small external constraints and is environmentally friendly. The application can efficiently realize large-scale continuous estimation, and the estimation result has high precision and strong stability, which can accurately depict the spatial distribution of carbon content and provide reliable technical support and data guarantee for related work.