207results about How to "Meet actual needs" patented technology

The utility model relates to a multi-nut one-time welding machine which is provided with a machine frame, a welding power source is arranged in the machine frame, a lower electrode base is arranged on the lower portion of the machine frame, and an upper electrode base is arranged on the upper portion of the machine frame. The lower electrode holder is provided with a lower conductor which is connected and conducted with an electrode of a welding power supply; a plurality of conductive supporting tables are arranged at the top of the lower conductor; a plurality of sets of mutually independent upper electrode assemblies are arranged on the upper electrode seat and the mounting bracket; the upper electrode assembly is provided with a vertically downward conductive voltage column; the upper portion of the conductive pressing column is connected with an upper electric conductor, and a pressing driving element is installed above the upper electric conductor. The upper conductor is connected with a conductive contact, and a conductive driving element is mounted at the top of the conductive contact; and a conductive plate is arranged below the conductive contact. According to the utility model, the plurality of nuts are simultaneously fixed on the sheet metal part by utilizing the conductive pressing columns, then the conductive driving elements act in sequence, and the conductive pressing columns above the plurality of nuts are electrified in sequence by utilizing one welding power supply, so that the welding is realized.

The invention discloses a manufacturing method of a standard wafer with sparse scattering defects. The manufacturing method comprises the following steps: step 1, determining preset defect parameters; step 2, according to preset defect parameters, generating a defect graph formed by bulges or pits of which position coordinates are randomly arranged in the defect area, designing the defect graph into a standard sample plate structure layout, and manufacturing a target mask plate according to the standard sample plate structure layout; obtaining a target wafer through a thermal oxidation process; step 3, transferring the pattern on the target mask plate to the target wafer by using a photoetching process; and etching the target wafer by adopting an etching process to obtain a standard wafer. According to the manufacturing method of the standard wafer with the sparse scattering defects, the manufactured standard wafer has the controllable defect number and defect diameter, and the wafer can be cleaned and has the longer service life. And the distribution area, size and quantity parameters of the defects are all controllably generated, so that the requirements of different types of detection equipment can be met.

The present application relates to the technical field of flame-retardant pipes, and in particular to a low-temperature impact-resistant flame-retardant silicon core pipe and a preparation method thereof. The low-temperature impact-resistant flame-retardant silicon core pipe comprises an inner layer and an outer layer, and the outer layer comprises the following raw materials in parts by weight: 70-90 parts of high-density polyethylene resin, 15-25 parts of star-shaped SBS, 3-5 parts of maleic anhydride grafted high-density polyethylene, 6-10 parts of inorganic flame retardant, 10-15 parts of elastic flame-retardant microspheres, 0.1-0.5 parts of antioxidant, 0.4-0.8 parts of antibacterial agent, 2-4 parts of carbon fiber, 1-3 parts of dispersant and 1-3 parts of silane coupling agent; the invention has the advantages of improving the mechanical properties of the pipe while improving its flame retardant properties.

The invention relates to the technical field of facility agriculture and micro-grid cooperative control, and particularly discloses a greenhouse micro-grid dynamic scheduling and photosynthetic efficiency cooperative optimization control method and system. The method comprises the following steps: constructing an energy management scheduling model with maximization of accumulated net photosynthetic products of crops in a scheduling period and minimization of net energy cost of a micro-grid as a collaborative optimization target; collecting real-time environment parameter data in the greenhouse and operation data of a micro-grid wind and light storage system and a load; a multi-objective optimization algorithm is adopted to solve the model online, and a joint optimization strategy including a micro-grid dynamic scheduling instruction and a greenhouse environment coordination control instruction is output; and executing the joint optimization strategy, and dynamically regulating and controlling the power output distribution of the micro-grid, the energy storage charging and discharging state and the operation process of the environment regulation and control equipment. According to the method, the multi-target collaborative optimization model with'photosynthetic product accumulation maximization 'and'net energy cost minimization' as the core is constructed, so that comprehensive maximization of energy benefits and agricultural production benefits is realized.

The utility model discloses a vibration atomizer with an adjustable air passage, which comprises a shell, a battery support fixedly connected in the shell, a control assembly arranged on the battery support and a vibration motor connected with the control assembly, an air adjusting mounting cavity communicated with the air inlet channel is formed in one side of the battery bracket; the air adjusting assembly is connected to the air adjusting mounting cavity in a clamped mode, a first air inlet hole matched with the air inlet channel in position is formed in one side of the shell, and the air adjusting assembly comprises an air adjusting piece and an air adjusting fixing piece; a first air channel is arranged on the air adjusting fixing piece and communicated with the first air inlet hole and the air inlet channel. The cigarette cartridge is detachably connected with the battery support, and the cigarette cartridge is provided with an atomizing core assembly. According to the air inlet structure, the air inlet amount can be adjusted through the air adjusting assembly, meanwhile, small-air-amount operation can be conducted when the air adjusting assembly is closed, the air inlet structure is optimized, and cost is reduced.

This application relates to the field of electronic atomization equipment technology, specifically an atomizer comprising a liquid cup, an atomizing core assembly, a base assembly, a bracket, and a first sealing element. The bracket rests against and is linked to the base assembly, and has a liquid inlet hole. Under external force, the base assembly moves the bracket so that the liquid inlet hole is located inside the liquid cup, which communicates with the atomizing core assembly through the liquid inlet hole. This application also relates to an aerosol generating device. The technical solution provided by this application enables the base assembly and the atomizing core assembly to be connected, with the atomizer in a pre-assembled state, i.e., a liquid-core separated state, preventing the aerosol matrix from seeping into the atomizing core assembly and then leaking out from the air passage. This structure maintains the freshness of the aerosol matrix, facilitating replacement, maintenance, and cleaning, thus improving the user experience. It eliminates the need for users to assemble the atomizer themselves, and the atomizer has a simple structure and high stability, meeting user needs.

A premixing type industrial burner comprises a burner body, the upper side of the burner body is fixedly connected with a mixing box, the lower side of the mixing box is provided with an oil outlet, the mixing box is fixedly provided with an oil storage box and an air storage box, one side of the oil storage box and one side of the air storage box are each provided with a feeding box, and fuel oil or air is added into the mixing box through the feeding boxes. The device is characterized in that the feeding box comprises a pipe body, one end of the pipe body is closed, pistons are adjustably installed in the pipe body in an airtight fit mode, sliding rods are installed on the pistons in a sliding mode respectively, a plurality of through holes are formed in the pistons, and sealing plates are fixedly installed at the inner ends of the sliding rods respectively; the sealing plate can abut against the side wall of the piston in a contact fit mode. The fuel oil mixing device is simple in structure and ingenious in conception, fuel oil and air are fully and evenly mixed through the vertical stirring mode of the multiple stirring rods, meanwhile, the mixing proportion of the air and the fuel oil can be changed, actual requirements can be met, and the fuel oil mixing device is suitable for popularization.

This invention belongs to the field of power dispatch automation technology, and provides a method and system for automatically constructing a power grid operation simulation scheme library. The method includes acquiring and parsing power grid operation simulation themes and constraints of power grid operation simulation schemes; extracting power grid feature models by combining power grid physical models and data; and generating initial operation modes for power grid operation simulation schemes based on cross-section matching algorithms. For different power grid operation simulation themes related to fault handling, different preset faults are generated for each power grid operation simulation scheme. Based on a dispatch knowledge base and a fault handling scheme library, a set of fault handling schemes is obtained through knowledge reasoning. The set of fault handling schemes is evaluated using a power grid operation simulation scheme compilation result evaluation system to obtain the optimal fault handling scheme. Finally, the preliminary power grid operation simulation schemes are classified according to the power grid operation simulation themes to generate a power grid operation simulation scheme library. This invention provides dispatchers with a large number of categorized and practical power grid operation simulation schemes.

The utility model provides a variable pet feeding trough, include: first subassembly, be equipped with a plurality of first feeding trough position on first subassembly, second subassembly, be equipped with a plurality of second feeding trough position on second subassembly, third subassembly, be equipped with a plurality of third feeding trough position on third subassembly, second subassembly and third subassembly can be moved to the support position of support in the below of first subassembly with first subassembly and move to the horizontal placement position of side -by -side with first subassembly. The utility model discloses a variable pet feeding trough can realize state switching by moving second subassembly and third subassembly, can use only the feeding trough position on first subassembly, can also use the feeding trough position on first subassembly, second subassembly and third subassembly simultaneously, can switch flexibly, the number of feeding trough position can also be adjusted flexibly, can be single also can use simultaneously multiple, satisfy the use of different number of pets, in addition can also realize the adjustment of height, satisfy the need of different body shape pets, and the practicality is stronger.

The invention provides a test device and method for fission source item release in an irradiated fuel element, and relates to the technical field of nuclear safety fission product source item tests. The test device comprises a reaction kettle, a water circulation system and a pressure stabilizing system, the water circulation system comprises a water tank, a make-up pump, a surge tank and a preheater which are sequentially connected through pipelines, the preheater is communicated with the feeding end of the reaction kettle, the surge tank is communicated with the discharging end of the reaction kettle, and a circulating pump is further arranged at the discharging end of the reaction kettle; the pressure stabilizing system comprises a gas steel cylinder and a filter which are sequentially connected through a pipeline, and the filter is respectively communicated with the pressure stabilizing tank and the reaction kettle; an ion exchange bypass and a water condensation bypass are further arranged on a connecting pipeline of the pressure stabilizing tank and the reaction kettle, an ion exchange column is arranged on the ion exchange bypass, and a condenser is arranged on the water condensation bypass. Dynamic source item tests of radionuclides can be carried out, so that nuclide release behavior researches of irradiated fuel elements in various element forms can be realized.

The utility model relates to the technical field of food, and discloses an ice hockey storage device which comprises a box body, a placing assembly is arranged on the inner wall of the box body, a collecting assembly is arranged on the outer wall of the box body, the placing assembly comprises a mounting groove, an ice bucket is mounted on the inner wall of the mounting groove, and a motor is mounted at the bottom of the ice bucket. The ice hockey storage device is provided with a mounting groove, an ice bucket, a motor, a rotating shaft, a mounting seat, a storage tank, a preformed hole, a refrigeration sheet, a radiator, a heat dissipation cover plate, a bucket cover, a feeding hole and a sealing cover, the ice bucket is kept in a low-temperature state through working of the refrigeration sheet, meanwhile, the heat dissipation is conducted on the hot end of the refrigeration sheet through the radiator, and when ice hockey needs to be put in, a worker unscrews the sealing cover, and the ice hockey is put into the ice hockey storage device. The empty storage tank is rotated to the position below the feeding port through rotation of the motor, then the ice balls can be put in, the device does not need to be wholly opened, entering of hot air is reduced, adhesion caused by melting of the ice balls is avoided, the structure is simple, operation is convenient and fast, and the requirements of people are met.

The optometry unit comprises an optometry unit body, a base is installed at the bottom of the optometry unit body, a vertically leftward electric push rod is installed on the left side of the optometry unit body, a vertically upward first sleeve is installed at the output end of the electric push rod, and a second sleeve is installed at the output end of the first sleeve. A first sliding rod is slidably connected to the interior of the first sleeve, and a jaw support is mounted at the top of the first sliding rod; the lifting device is formed by arranging a first sleeve, a first sliding rod, a jaw support, a first shell, a first bearing, a first threaded rod, a first rotating valve, a first sliding block and a connecting rod, the first rotating valve is rotated to drive the first threaded rod to rotate, the first sliding block drives the jaw support to move up and down, the height of the jaw support can be changed by a user, and the requirements of different users can be met; the jaw support can be tightly attached to the jaw of a user, the jaw of the user is supported, manpower of the user is saved, and optometry is facilitated.

The utility model discloses a pair of nursing trousers, which comprises a trousers body and a protective cover, the trousers body comprises two trousers pieces which can be unfolded or separated, one sides of the two trousers pieces are connected, the other sides of the two trousers pieces are detachably connected through a first connecting piece, and the middle positions of the bottoms of the two trousers pieces are detachably connected through a second connecting piece. Trouser leg openings through which the legs of a patient can pass are formed in the two sides of the trouser body respectively; the protective cover is arranged between the two trouser leg openings, and the protective cover is detachably connected with the trouser body through a third connecting piece; the protective cover is elastic and comprises a first part and a second part, a seam is arranged between the first part and the second part, the first part and the second part are connected through a fourth connecting piece, and the first part and the second part are combined to form the protective cover. The pair of nursing trousers is convenient to wear, effectively prevents a wound from being touched in the wearing process, and relieves inconvenience of a patient by freely adjusting the width tightness.

The application discloses a liquid droplet fusion microfluidic method based on a liquid droplet fusion microfluidic device regulated by focused surface acoustic waves, and the device comprises an interdigital transducer, two focusing arc electrodes arranged on the interdigital transducer, and a microfluid channel system bonded on the upper part of the interdigital transducer. The focusing arc electrodes are matched with the microfluid channel system, and the microfluid channel system is provided with a first collection outlet joint, a first dispersed phase inlet joint, a continuous phase inlet joint, a second dispersed phase inlet joint and a second collection outlet joint. The focusing surface acoustic waves generated by the interdigital transducer and the liquid droplet microfluid channel structure are used to flexibly realize the fusion control of liquid droplets with different sizes in the microfluid channel. The symmetrical structure is adopted to enhance the durability and repeatability of the microfluid device. The method is not only suitable for the fusion control between microdroplets, but also suitable for the fusion control between microbubbles and between microdroplets and microbubbles. The surface acoustic waves are non-contact and have good biological compatibility, and thus meet the needs of the liquid droplet fusion technology in the fields of biochemistry and medical treatment.

A system comprising: a container for containing a filling material; and a vibration source connected to the container. The vibration source may increase the bulk density of the fill material. A filler material ratio may be defined as a particle density of the filler material divided by the bulk density of the filler material after vibration. The filler material ratio may be in a range from about 0.15 to about 0.75 after the vibration source increases the bulk density of the filler material.

The utility model relates to the related field, in particular to a manual gate valve capable of accurately controlling flow, which comprises a valve body, a valve plate, a valve rod, a hand wheel, a connecting pipe, a mounting frame, a hollow disc, a rotating circular plate, a circulating hole, a groove, a worm, worm gear teeth, a rotating wheel, a fixed disc, scale marks, a pointer, a buffer film, a ceramic coating and the like. According to the utility model, the hollow disc and the rotating circular plate are arranged, and the rotating circular plate rotates in the hollow disc, so that the area of the overlapped part of the circulating holes in the hollow disc and the rotating circular plate is adjusted, the area of a medium flowing through the circulating holes is finely adjusted, and the flow control is realized; and the rotating angle of the rotating circular plate can be more accurately calculated through cooperation of the pointer and the scale marks, then the size of the area of the overlapped part of the circulating holes in the hollow disc and the rotating circular plate is calculated, the flow in the gate valve can be further accurately controlled, the gate valve can meet more actual requirements, and the practicability of the gate valve is improved.

Described is a telehandler having a cab (1) equipped with a roof (10) defined by a transparent or semi-transparent protective cover (11) which comprises one or more materials designed to withstand the falling of hazardous material for the safety of an operator onboard the cab (1). The cover includes a plurality of layers made of polymeric material, including one made of polycarbonate (111, 112) or polyurethane (110).

The invention provides a bromhexine hydrochloride composition which comprises bromhexine hydrochloride, a cosolvent and a solvent, the content of bromhexine hydrochloride is 1-10w / v%, the content of the cosolvent is 10-50v / v%, and the bromhexine hydrochloride composition further comprises phenol. The bromhexine hydrochloride composition is stable in property and high in solubility, can be mutually soluble with water in any ratio, is simple in production process, is suitable for a bromhexine hydrochloride preparation produced industrially, and achieves the effect through optimization of components and proportions.

The utility model discloses a building heating and ventilation pipeline scale removing device, and relates to the technical field of building heating and ventilation pipelines, the building heating and ventilation pipeline scale removing device comprises a supporting pipe, movable grooves are formed in the top and the bottom wall of the supporting pipe, an adjusting assembly is installed on the inner side of the supporting pipe, and the adjusting assembly comprises a two-way screw rod installed on the inner side of the supporting pipe; a lantern ring is installed on the outer side of the bidirectional lead screw, a bearing seat is installed on the outer wall of the lantern ring, the bearing seat is connected with a connecting rod through a connecting piece, and the connecting rod penetrates through the inner side of the movable groove. The bidirectional lead screw is installed, the control motor operates to drive the bidirectional lead screw at the output end to rotate, the bidirectional lead screw rotates to drive the lantern ring on the outer side to move, the lantern ring moves to drive the bearing seat to move, the bearing seat is connected with the connecting rod through the connecting piece, and the top end of the connecting rod is connected with the cleaning brush through the assembling seat. The bearing seat drives the connecting rod to adjust the angle, so that the distance between the cleaning brushes is adjusted, the size is conveniently adjusted according to needs, and the needs of different pipelines are met.

The utility model relates to the technical field of microbial fertilizer compounding and mixing, and discloses a microbial fertilizer compounding and mixing device which comprises an equipment body, a mixing tank is installed in the equipment body, a stirring assembly is arranged in the mixing tank, a feeding port is fixedly connected to the top of the equipment body, and a discharging port is fixedly connected to the bottom of the equipment body. A crushing assembly is arranged in the feeding hole; the stirring assembly comprises a first motor, and an output shaft of the first motor is fixedly connected with a stirring rod through a coupler. The microbial fertilizer compounding and mixing device is provided with a first motor, a stirring rod, stirring blades, a long rod, a circular groove, a spring, a circular block, a connecting rod and a scraping plate, the stirring rod can be driven to rotate by starting the first motor, so that the stirring blades rotate to mix materials, and the scraping plate rotates to scrape off the materials attached to the mixing tank, so that the materials are mixed more uniformly; and the requirements of people are met.

The utility model relates to the technical field of stator coils, and discloses a stator coil shaping and fastening device which comprises a machining table, a fixing assembly is arranged on the outer wall of the machining table, a supporting frame is fixedly connected to the outer wall of the machining table, a supporting plate is fixedly connected to the top of the supporting frame, and an air cylinder is installed on the outer wall of the supporting plate. A mounting assembly is arranged at one end of the air cylinder. The stator coil shaping and fastening device is provided with the fixing groove, the fixing block, the clamping groove, the sliding groove, the threaded groove, the screw rod, the clamping block and the lower mold, the lower molds of different sizes are designed according to the size of a stator coil, the lower molds of different sizes are fixed to the fixing block, and in the disassembling process, the clamping block is moved out of the clamping groove by rotating the screw rod, so that the stator coil is disassembled. The fixing of the fixing block is relieved, an operator can take out the fixing block, the operation is simple, the disassembly is convenient and fast, the working efficiency is improved, and the requirements of people are met.

The utility model relates to a kind of negative pressure weighing chamber for ice bor scattering, belong to negative pressure weighing chamber technical field, including box, the inner top wall of the box is equipped with the weighing chamber body that can provide stable space to ice bor scattering and weigh, the inner left wall of the box is equipped with the air flow component that is powered for gas flow, the top of the weighing chamber body is equipped with the adjustment component that can control the size of air intake speed, the inner bottom wall of the box and below the weighing chamber body is equipped with the first filter component that carries out primary filtration to air, the inner left wall of the box is equipped with the secondary filter component that carries out further filtration to air.The negative pressure weighing chamber for ice bor scattering, by the cooperation of first electric fan, secondary electric fan and adjustment component, can guarantee the uniformity of pressure difference while improving air outlet, to better meet the actual needs of ice bor scattering, improve weighing stability, by the cooperation of first filter component and secondary filter component, can effectively filter and sterilize air.

The utility model relates to the technical field of coating production, and discloses a feeding device for a coating reaction kettle, which comprises a reaction kettle body, the top of the reaction kettle body is fixedly connected with a feeding port, the inner wall of the feeding port is provided with a filtering component, and the outer wall of the feeding port is provided with a rotating component. The feeding device for the coating reaction kettle is provided with a supporting plate, a first magnet, a mounting frame, a second magnet, a mounting groove, a filter screen and a fixed handle, an operator can slidably mount the mounting frame into a feeding port, the second magnet is in contact with the first magnet to perform magnetic attraction fixation, mounting is completed, the operator pours raw materials into the feeding port, and the operation is convenient. Raw materials enter the reaction kettle body through the filter screen, and impurities in the raw materials are blocked and left in the filter screen by the filter screen, so that the impurities in the raw materials can be effectively filtered, the quality and the performance of the produced coating are improved, and the requirements of people are met.

The embodiment of the application discloses a mountain road trap active detection method and system based on sound wave reflection, the method comprises the following steps: collecting the echo signal of the multi-path propagation of the multi-band detection sound wave in the to-be-detected mountain road area through a microphone array, and scoring the propagation path according to a path credibility scoring mechanism; if it is determined that the trigger condition is met, it is determined that the to-be-detected mountain road area has a trap, and a risk early warning is carried out; if it is determined that the trigger condition is not met, the second feature data and the first feature data are input into a pre-trained machine learning model, and the trap category of the to-be-detected mountain road area is determined according to the machine learning model. The system has a second-level response capability, greatly improves the safety, realizes full-process automation, reduces manual intervention, and greatly improves the mountain road inspection efficiency.

The invention discloses a distributed transaction management method and a related device, and relates to the field of distributed transactions, and the method comprises the steps that a coordinator obtains a context of a target branch transaction included in a target global transaction; the coordinator obtains a branch transaction policy matched with the context from a branch policy storage module, the branch policy storage module stores a branch policy configuration table, and the context and the branch transaction policy are correspondingly stored in the branch policy configuration table; the branch transaction strategies in the branch strategy configuration table at least comprise a multi-compensation strategy, a multi-retry strategy, a compensation termination strategy, a retry termination strategy and a transaction suspension strategy; and the coordinator executes an operation corresponding to the obtained branch transaction policy. According to the method and the device, the requirements of different services can be met.

The utility model provides a multi-purpose lamp post for an emergency tent-sink area, which is characterized in that a mounting groove is formed in a post body and is arranged along the length direction of the post body; the illuminating lamp is fixedly arranged at the upper end of the rod body; the emergency lamp is fixedly arranged at the top of the rod body, and the emergency lamp is located above the illuminating lamp; the hook assembly is movably arranged in the mounting groove; the lifting assembly is connected with the hook assembly, and the lifting assembly is located in the rod body; according to the technical scheme, the lifting device and the hook assembly are arranged on the lamp pole, the height of the hook assembly can be adjusted through the lifting device, and when disasters occur, the hook assembly is arranged at the working position and the parking position through reciprocating motion of the lifting assembly. And the hook assembly is adjusted to the height which can be used by people, so that the use conditions of people suffering from disasters are met, and the use requirements of emergency sites can be met.

The utility model relates to the technical field of water quality monitoring, and discloses a water quality on-line constant-temperature monitoring device which comprises a mounting shell, a floating block is fixedly connected to the bottom of the mounting shell, a winding device is arranged in the mounting shell, a rope is arranged on the outer wall of the winding device, and a protection assembly is arranged at one end of the rope. According to the online constant-temperature water quality monitoring device, when a monitoring sensing head is mounted, a fixed handle is pulled, a clamping block moves to drive a spring to contract, a base of the monitoring sensing head is inserted into a mounting seat, the fixed handle is loosened, the spring rebounds to push the clamping block to move, one end of the clamping block extends into an annular groove of the base of the monitoring sensing head to be clamped, and when mounting and dismounting are completed, the clamping block is clamped in the annular groove. By pulling the fixed handle, one end of the clamping block is separated from the annular groove, an operator pulls the monitoring sensing head base out of the mounting seat to complete dismounting, the mounting and dismounting operation is simple, maintenance and replacement by people are facilitated, and the requirements of people are met.

The utility model provides a kind of thick and thin adjusting assembly, for adjusting how many functional liquid is input to foaming assembly, comprising: operating member, PCB circuit board;The inductor is provided on the PCB circuit board, and the inductor is used to sense the position change of the operating member;The signal output of the PCB circuit board is to liquid pump to control liquid pump to start to pump into functional liquid to foaming assembly;The operating member moves under the action of external force to make the operating member and inductor relative movement, the inductor senses the position change of the operating member and different signal is correspondingly output to the liquid pump to change the power of liquid pump.The utility model further provides a kind of foaming assembly, including the thick and thin adjusting assembly as above.The utility model further provides a kind of shower controller, including liquid pump and the foaming assembly as above.The utility model further provides a kind of shower system, including the shower controller and water outlet terminal as above, and the foam outlet of foaming assembly is connected with water outlet terminal.

This invention discloses a method and apparatus for generating invoices, relating to the field of computer technology. One specific embodiment of the method includes: in response to receiving an invoice generation request, determining the type of invoice to be generated from the generation request; if the type of the invoice to be generated is a first type, obtaining the item cost details of the invoice to be generated, filtering the item cost details by attribute according to preset filtering rules to obtain fixed item costs and unconfirmed item costs, and confirming the unconfirmed item costs; generating an invoice based on the confirmation result of the unconfirmed item costs and the fixed item costs. This embodiment achieves automated, intelligent, and flexible billing and settlement, not only improving the efficiency of invoice generation but also supporting more billing and settlement scenarios, better meeting practical needs.