33results about How to "Clear parameters" patented technology

The invention relates to a method for preparing a microcapsule taking a hydrophobic substance as a core material by a complex coacervation method. The method has the advantages of simple process and relatively lower cost, and the product has relatively higher encapsulation efficiency. The method comprises the following steps of: (1) weighing gelatin and carboxymethylcellulose in certain proportion, and stirring and dissolving the gelatin and the carboxymethylcellulose in hot water; (2) adding hydrophobic substance in certain mass ratio and dispersing the hydrophobic substance for 2 minutes at a high speed to form emulsion; (3) stirring the emulsion at the constant temperature of 45 DEG C, adjusting the pH of the emulsion to be 4.4 to 4.8 with a 10 percent ethylic acid and reacting the emulsion with the ethylic acid for 5 minutes; (4) cooling the emulsion until the temperature is below 15 DEG , adjusting the pH of the emulsion to be 6.0 and adding glutamine transaminase for solidification; and (5) filtering the mixed solution to obtain a wet microcapsule product, and freeze-drying or spray-drying the wet microcapsule product to obtain a dried microcapsule product.

The invention discloses a method for calculating delays in an intersection based on the motorcade following theory. The method includes the steps of firstly establishing a basic assumption, then collecting traffic characteristic data, intersection geometrical parameters, vehicle power, geometrical parameters and signal control schemes, marshalling the collected data into parameters needed in an algorithm, dividing vehicles into three sets according to the different states of the vehicles when the vehicles pass the intersection in a period based on the traffic engineering theory, utilizing the input data to judge respective duration of three sets of traffic flow inputs according to discriminant in the algorithm, then further calculating delay time of vehicles belonging to each set, calculating delays in all entrance channels respectively with combination of the distribution of the traffic flow inputs, then obtaining total delay of the intersection, and eventually adding or subtracting factors in the calculation result combining with the practical situation, and modifying the calculation result. The method has the advantages of being high in applicability, clear in parameters, large in calculated amount, suitable for being combined with computer programming, and capable of being further applied to an intersection signal control timing scheme.

The invention provides a cultivation method for promoting stable yield of dried sweet potatoes in northern sweet potato area plains to exceed one ton per mu. The cultivation method comprises the steps of carefully selecting the variety, selecting land to form a ridge, performing formulated fertilization, selecting strong seedlings, performing film mulching and early planting, appropriately increasing the density, performing drip irrigation under a mulch, strictly preventing diseases and pests, chemically controlling the excessive vegetative growth and performing mechanical harvesting. According to the cultivation method, through early planting and close planting and by the matching of other advanced planting technologies, the growth time of the sweet potatoes is prolonged, the content of starch in the sweet potatoes and the sweet potato dry matter accumulation amount in unit area land are remarkably improved, and the per mu yield of the dried sweet potatoes can exceed one ton. The comprehensive degree of the technology is improved, the fusion of the improved variety and the good method and the combination of an agricultural machine and the agricultural technology are performed, the matching of engineering measures and cultivation measures is achieved, the level of the cultivation technology is fully improved, the working efficiency is improved, and the production cost is reduced. The standard degree of the technology is improved, the technology details and parameters are further clearer through the quantitative data indexes, and the basis is laid for the standard forming and popularization of the planting technology.

The invention discloses a method for electric transmission line windage yaw transient analysis under action of moving thunderstorm wind. The method comprises the steps that the vertical wind speed is considered in simulation of a moving thunderstorm wind field and the spatial correlation and the pulsation effect are synchronously considered; when the wind load is determined, a transient wind attack angle and a corresponding divided conductor aerodynamic coefficient are introduced, and the wind speed and change of the direction are considered in a time domain; in the analysis process of a wind deflection angle, displacement, caused by the asymmetric load, in the direction of a line is considered, the largest wind deflection angle of part of the electric transmission line is calculated under the condition of the extreme wind load, design work of windproof measures of the electric transmission line is directed, and the power supply reliability of the electric transmission line is improved.

The invention discloses an adaptive image target enhancement method based on a difference of Gaussian model and belongs to the digital image processing field. In the method, based on a lateral inhibition phenomenon of a biological visual receptive field, the difference of Gaussian (DOG) model of image space domain filtering is established. Target and noise gray level distribution prior knowledge in a water surface image and a constraint relation of excitability and inhibition effect offset are used to select a model parameter so as to reach a local optimal enhancement effect. By using the method in the invention, comprehensive performance of target enhancement, background inhibition and noise filtering is better than the comprehensive performance of a traditional spatial-domain high pass filter. The enhanced image possesses a good visual sense and simultaneously a demand of subsequent motion vector estimation to a correlation operation signal to noise ratio is satisfied.

The invention belongs to the technical field of producing and processing of polyester filament yarns and particularly relates to a method for industrial production of polyester filament yarn by using polyester waste yarn. The method comprises the following specific operation steps: preparing a bubble material, crystallizing, drying and extruding; and preparing melt, filtering, homogenizing and spinning; and finally obtaining the polyester filament yarns. With the waste yarns generated in the process of recovering polyester bottle flakes to produce the polyester filament yarn as the raw material, the bubble material is produced from the waste yarns; the polyester filament yarns are industrially produced from the bubble material; cyclic utilization of the waste yarns is realized; the process disclosed by the invention is stable; the utilization rate of the recovered polyester bottle flakes is effectively improved; and the method can be popularized and applied.

The invention provides a method for preparing crude phycobiliprotein and crude polysaccharide from porphyra yezoensis. The novel method for preparing crude phycobiliprotein and crude polysaccharide simultaneously comprises steps as follows: fresh and wet porphyra is taken as a raw material, harvested porphyra yezoensis is washed, drained and subjected to centrifugal dewatering processing, and mixing swelling, wet-method ultrafine grinding performed by a colloid mill combined homogenizer, salting-out and other procedures are performed. According to the method, drying processing of the fresh and wet porphyra in the preparation process of phycobiliprotein is eliminated, a prepared crude phycobiliprotein product contains 34.3%-38.9% of phycobiliprotein on the dry basis, and the yield of phycobiliprotein ranges from 4.59% to 4.71%. The method is suitable for industrial application, the crude phycobiliprotein product prepared from porphyra can be taken as a preparation raw material of high-purity porphyra phycobiliprotein, and the prepared crude polysaccharide can be taken as a preparation raw material of polysaccharide.

The invention provides sweet potato dreg type fermented feed which is prepared through the fermentation technology of candida utilis and the like by using the abundant sweet potato dreg resources in areas where sweet potatoes are planted densely. According to the sweet potato dreg type fermented feed, the existing technology of fermented sweet potato dregs is improved, production parameters are made clear, production links are reduced, and the fermented sweet potato dregs with the higher feeding value are acquired.

The invention provides a four-change-one-increase high efficiency cultivation method for fresh eating sweet potatoes in plains of the China northern potato region. The method comprises the following steps that an excellent variety is selected; health seedlings are selected; ridging, pipe layering and film overlaying are carried out; close planting is carried out earlier appropriately; water and fertilizers are managed accurately; appropriate chemical control is implemented; vine removing and harvesting are carried out mechanically; and early harvesting and grading are carried out in proper time. In the cultivation method, drip irrigation is used according to needs of scaled household farms, the wheelspan of a power machine matching mechanical traction is taken into full consideration, a single-ridge-single-row manner is changed to a large-ridge-double-row manner, rely on natural rainfall is changed to accurate water supply, fertilizer broadcasting is changed into quantitative fertilizer supply, excessive chemical control is changed into staged green chemical control, and the sweet potato plantation density is increased; thus, the survival rate in the seedling stage and the rate ofcommercial potatoes are improved, the climate risk in sweet potato production is reduced, the high efficiency cultivation method with the core of four-change-one-increase for the fresh eating sweet potatoes is formed on the basis of integration of water and fertilizer drip irrigation, and production of the fresh eating sweet potatoes enters a mechanical, facility, engineering and simplified stage.

The invention discloses washing superfine tin powder water-soluble lead-free high-temperature flux paste and a preparation method thereof. The washing superfine tin powder water-soluble lead-free high-temperature flux paste is prepared from the following raw materials in parts by weight: 30-55 parts of an antioxidant, 10-26 parts of an organic solvent, 4-8 parts of a thixotropic agent, 8-16 partsof an active agent, 6-10 parts of a corrosion inhibitor and 6-10 parts of a surfactant. The water-washing solder paste prepared from the flux paste is good in stability, and effectively meets the practical requirements for oxidation resistance, tin point plumpness, low void content, no splashing of residues, good cleaning performance and the like.

The invention relates to a prestress design method for a cable-stayed bridge concrete cable bent tower anchorage zone, and belongs to the field of the prestress design of the cable bent tower anchorage zone. The method comprises the following steps that: S1: determining the front wall thickness-width ratio [Lambda] of the cable bent tower; S2: according to the [Lambda] value, selecting a cable bent tower-compression bar model to be adopted, and calculating a geometrical parameter; S3: solving maximum pull bar internal force; S4: according to the maximum pull bar internal force, calculating theamount of required prestress ribs; and S5: according to a pull bar movement direction in the model, arranging the prestress ribs. The method can be used for the quantitative design of the prestress of the cable bent tower anchorage zone, and puts forward a cable bent tower anchorage zone pull-compression bar model which has a specific geometrical parameter and can be directly used by engineeringpersonnel. The method has the advantages of high universality, high design efficiency, clear mechanical concept and high calculation accuracy, and blindness and low efficiency caused by a situation that traditional cable bent tower anchorage zone design depends on the experience of design personnel and a great quantity of trial calculations are avoided.

The present invention provides a manufacture method of macadimia nut leaf tea. Macadimia nut tender leaves are used; the macadimia nut leaf tea is prepared by 8 elaborate processing steps of materialselecting, tedding, enzyme deactivating, cooling, rolling, shaping, drying and packaging; and the macadimia nut leaf tea has the same appearance as that of ordinary tea leaves, is similar to green teain tea drinking methods and hues, but also has a special aroma that ordinary green tea does not have, and is thick in taste and strong and pure in aroma. The product has been tested to completely show basic requirements of tea leaves. The macadimia nut leaf tea is purely hand-made; the manufacture method is simple and clear in processes, easy to operate and convenient to scale production. The produced macadimia nut leaf tea is rich in proteins, human body essential amino acids, vitamins, minerals, flavonoids and other various nutrients, does not contain caffeine, has mind-soothing effects, and can calm excitement, help sleep, present aging and enhance immunity in a long time drinking. The manufacture method fully preserves the various nutrients of the macadimia nut leaf tea; the tea leaves are thick, tender and curly; liquid is bright in color; and the macadimia nut leaf tea is strong and refreshing in taste, and has relatively high promotion value.

The invention discloses a method for calculating the wall thickness of an anti-explosion pipeline based on an equivalent load, and the method comprises the following steps: firstly, considering the most dangerous condition according to the type of combustible gas in the pipeline and the type of oxidizing gas which is possibly mixed into the pipeline, namely, when the mixing ratio of the combustible gas to the oxidizing gas in the pipeline is a stoichiometric ratio, calculating the detonation pressure of detonation of the mixed gas in the pipeline, taking k times of the detonation pressure as equivalent static pressure, then calculating the wall thickness of the pipeline preliminarily according to a formula, and obtaining the final wall thickness of the pipeline by rounding upwards. According to the method, the service installation condition of the pipeline and different explosion scenes possibly occurring in the pipeline are fully considered, the pipeline design requirement can be met in a more targeted mode, the designed pipeline has the more appropriate wall thickness while the anti-explosion performance is met, and therefore better economical efficiency is achieved; the method is convenient and rapid to implement, and the professional degree requirement on personnel is low.

The invention relates to a glue path detection method for glue with a fluorescence effect. The method comprises the steps that a UV light source is used for irradiating to obtain an image of a glue path; the image is processed; an overflow glue detection mode and / or a first glue breaking / dripping detection mode and / or a second glue breaking / dripping detection mode are / is carried out, wherein the overflow glue detection mode is used for detecting whether glue overflow abnormity exists in the glue path or not, the first glue breaking / dripping detection mode is used for detecting whether glue breaking abnormity and glue dripping abnormity exist in the glue path where the edge of the glue path is located or not, and the second glue breaking / dripping detection mode is used for detecting whether glue breaking abnormity and glue dripping abnormity exist in the glue path where the corner of the glue path is located or not. According to the invention, whether the glue path of the glue coated with the fluorescent effect has the defects of glue overflow, glue breaking and glue dripping can be intelligently detected, manual detection is avoided, and the detection efficiency and accuracy are high.

The invention discloses a preparation method of brominated epoxy resin special for a copper-clad plate and a product prepared by using the preparation method. The preparation method comprises the following steps of by adopting bisphenol A liquid epoxy resin and tetrabromobisphenol A as raw materials, adding a catalyst for reaction to obtain intermediate resin; adding the bisphenol A liquid epoxy resin again for polymerization and chain extension to obtain the target brominated epoxy resin. The brominated epoxy resin prepared by using the preparation method provided by the invention has the advantages of high purity, low product chrominance and stable product quality.

The invention relates to a gas injection and brine discharge device for a salt-cavern gas storage. The gas injection and brine discharge device comprises a sleeve pipe, a gas injection and brine discharge inner pipe and a gas injection and brine discharge outer pipe; the gas injection and brine discharge outer pipe is tripped into the upper portion of a salt cavern through the sleeve pipe, the gasinjection and brine discharge outer pipe is connected with the lower portion of the sleeve pipe through a packer, and an annular space between the sleeve pipe on the upper portion of the packer and the gas injection and brine discharge outer pipe is filled with annular protection liquid. The gas injection and brine discharge method comprises the following steps of sonar cavity measurement, bottomdetection of a lower drill rod, acquisition of cavity bottom sediment physical property parameters, determination of the size and brine discharge rate of the gas injection and brine discharge inner pipe, stress analysis of insoluble matter sediment particles near a pipe opening of the gas injection and brine discharge inner pipe, determination of the downward depth of the pipe opening of the gasinjection and brine discharge inner pipe and a pipe opening of the gas injection and brine discharge outer pipe, tripping of the gas injection and brine discharge outer pipe and the gas injection andbrine discharge inner pipe, and gas injection and brine discharge. Compared with the prior art, the gas injection and brine discharge device is suitable for brine discharging of the salt-cavern gas storage, a salt-cavern hydrogen storage, a salt-cavern compressed-gas energy storage and a salt-cavern oil storage; and the method has the advantages of simple steps, clear parameters and high operability, and can realize accurate control of gas injection and brine discharge of the salt-cavern gas storage.

The invention discloses a bisphenol A epoxy resin preparation method and a product prepared therethrough. The method comprises the following steps: carrying out a pre-reaction and a ring closing reaction on raw materials comprising bisphenol A and chloropropylene oxide to prepare a crude bisphenol A epoxy resin, removing water and excess chloropropylene oxide, refining, desalinating, neutralizing through water washing, removing a solvent, and concentrating to obtain a bisphenol A epoxy resin. The preparation method has the advantages of stable process, clear parameters, detailed steps and strong feasibility; and the bisphenol A epoxy resin prepared through the preparation method has high purity, has an organic chloride content of below 0.02wt%, and has high epoxy value, high softening point and extremely good quality, so the performances of the bisphenol A epoxy resin are improved.

The invention relates to a preparation method of an Etoricoxib crystal form V, in particular to an Etoricoxib crystal form V product prepared from Etoricoxib free alkali monomer. The method is feasible and controllable, simple to operate and low in cost, adopts an organic solvent with lower toxicity, effectively avoids environment pollution, is high in technical repeatability and stable in yield,can obtain pure V crystal form samples, ensures that the yield reaches greater than 90 percent, is more suitable for industrial production of Etoricoxib crystal form V, and has high economic benefit.

The invention relates to an inverter function test system and a test method. The inverter product is connected to the product inlet J through a wire. Under normal conditions, the charging data of the 120VAC battery B2 to be charged and the data Charging data, 120VAC fully charged battery B1 charging data, 277VAC fully charged battery B1 charging data, inverter discharge voltage meter VAC2, inverter discharge frequency table Hz measured 120VAC no-load inverter data, battery charging current meter IDC1, Inverter discharge voltmeter VAC2, inverter discharge frequency meter Hz, inverter lamp load ammeter IAC2 measured 120VAC full-load inverter data, battery charging current meter IDC1, inverter discharge voltmeter VAC2, inverter discharge frequency meter Hz, inverter lamp The load ammeter IAC2 measures the 277VAC full-load inverter data, records them in the test table and compares them with the standard data, and then transfers the product to the next process. The test items are complete, and the parameters are stable, clear and accurate.

The invention relates to a gas injection and brine discharge device for a salt cavern gas storage, comprising: a casing, an inner tube for gas injection and brine discharge, and an outer tube for gas injection and brine discharge; the outer tube for gas injection and brine discharge is lowered into the upper part of the salt cavern through the casing , the outer pipe for gas injection and brine removal is connected to the lower part of the casing through a packer, and the annular space between the casing on the upper part of the packer and the outer pipe for gas injection and brine removal is filled with annulus protection fluid. The method of gas injection and brine removal includes the following steps: sonar measurement of the cavity, lowering the drill pipe to explore the bottom, acquisition of physical parameters of the sediment at the bottom of the cavity, determination of the size and rate of the gas injection and brine removal inner pipe, and the insoluble matter near the mouth of the gas injection and brine removal inner pipe. The force analysis of the sediment particles, the nozzle depth of the nozzle of the inner gas injection and halogen removal pipe and the outer nozzle of the gas injection and halogen removal pipe are determined, and the outer and inner pipes of the gas injection and halogen removal are lowered, and the gas injection and halogen removal are carried out. Compared with the prior art, the present invention is applicable to brine discharge in salt cavern gas storage, salt cavern hydrogen storage, salt cavern compressed air energy storage and salt cavern oil storage; the steps are simple, the parameters are clear, and the operability is strong, which can realize the Accurate control of gas injection and brine discharge for salt cavern gas storage.

The invention discloses a method for electric transmission line windage yaw transient analysis under action of moving thunderstorm wind. The method comprises the steps that the vertical wind speed is considered in simulation of a moving thunderstorm wind field and the spatial correlation and the pulsation effect are synchronously considered; when the wind load is determined, a transient wind attack angle and a corresponding divided conductor aerodynamic coefficient are introduced, and the wind speed and change of the direction are considered in a time domain; in the analysis process of a wind deflection angle, displacement, caused by the asymmetric load, in the direction of a line is considered, the largest wind deflection angle of part of the electric transmission line is calculated under the condition of the extreme wind load, design work of windproof measures of the electric transmission line is directed, and the power supply reliability of the electric transmission line is improved.

The invention discloses a preparation method of brominated epoxy resin special for a copper-clad plate and a product prepared by using the preparation method. The preparation method comprises the following steps of by adopting bisphenol A liquid epoxy resin and tetrabromobisphenol A as raw materials, adding a catalyst for reaction to obtain intermediate resin; adding the bisphenol A liquid epoxy resin again for polymerization and chain extension to obtain the target brominated epoxy resin. The brominated epoxy resin prepared by using the preparation method provided by the invention has the advantages of high purity, low product chrominance and stable product quality.

The invention relates to a method for preparing a microcapsule taking a hydrophobic substance as a core material by a complex coacervation method. The method has the advantages of simple process and relatively lower cost, and the product has relatively higher encapsulation efficiency. The method comprises the following steps of: (1) weighing gelatin and carboxymethylcellulose in certain proportion, and stirring and dissolving the gelatin and the carboxymethylcellulose in hot water; (2) adding hydrophobic substance in certain mass ratio and dispersing the hydrophobic substance for 2 minutes ata high speed to form emulsion; (3) stirring the emulsion at the constant temperature of 45 DEG C, adjusting the pH of the emulsion to be 4.4 to 4.8 with a 10 percent ethylic acid and reacting the emulsion with the ethylic acid for 5 minutes; (4) cooling the emulsion until the temperature is below 15 DEG , adjusting the pH of the emulsion to be 6.0 and adding glutamine transaminase for solidification; and (5) filtering the mixed solution to obtain a wet microcapsule product, and freeze-drying or spray-drying the wet microcapsule product to obtain a dried microcapsule product.

The invention discloses a water-washable superfine tin powder water-soluble lead-free high-temperature soldering paste and a preparation method thereof, comprising the following raw materials in parts by weight: 30-55 parts of antioxidant, 10-26 parts of organic solvent, and 4-4 thixotropic agent 8 parts, 8-16 parts of active agent, 6-10 parts of corrosion inhibitor and 6-10 parts of surfactant. The water-washed solder paste prepared by using the solder flux paste of the invention has good stability and effectively meets practical requirements such as oxidation resistance, fullness of tin dots, low voids, no residue splashing, and good cleaning performance.

The invention discloses a method for calculating the overpressure of the pipeline physical explosion shock wave considering directionality. The method first assumes that the compressed gas of a cylinder with a length of kD and a diameter of D in the pipeline provides the energy for the shock wave formed by the physical explosion, and calculates the pipeline through the formula Physical explosion energy, then calculate the dimensionless distance from the target position to the explosion center, and obtain the ideal dimensionless overpressure corresponding to the target position through the Baker-Tang pressure vessel physical explosion overpressure-distance relationship diagram, and then calculate the actual dimensionless overpressure, Then the actual shock wave overpressure at the target position is obtained. This method provides a quantitative calculation method of explosion shock wave overpressure, and the calculation results are accurate.

The invention provides a cultivation method for improving the yield of sweet potatoes in hilly and mountainous areas of a northern potato planting region. The cultivation method comprises the steps of selecting a variety, cultivating strong seedlings, conducting ridging and applying fertilizer in an integrated mode, planting the seedlings early in an appropriate period, covering the seedlings with a plastic film, conducting chemical control, preventing and controlling diseases and pests and harvesting the sweet potatoes through machines. According to the step of cultivating the strong seedlings, seeds are dipped in gibberellin to promote sprouting, and strong seedlings and high sheared seedlings are selected carefully. According to the step of planting the seedlings early in an appropriate period, the seedlings are dipped in a modifier, three leaves remains on each seedling, the seedlings are planted in a drought-resisting mode, the seedlings in pits are watered with enough water, and reasonable close planting is adopted. According to the step of preventing and controlling diseases and pests, the diseases are prevented and controlled, and the pests are prevented and controlled. The advanced planting technologies including planting the seedlings early and densely, taking drought resisting measures in a seedling period and the like are adopted, so that the yield of the sweet potatoes is remarkably improved; the comprehensive degree of the technologies is improved, the cultivation technological level of the sweet potatoes in the hilly and mountainous areas is comprehensively improved, work efficiency is improved, and production cost is reduced; meanwhile, the standardization degree is high, and a foundation is laid for standardized setting and popularization of the cultivation technology of the sweet potatoes in the hilly and mountainous areas of the northern potato planting region.

The invention relates to a prestress design method for a concrete cable tower anchorage area of ​​a cable-stayed bridge, belonging to the field of prestress design for the cable tower anchorage area. The present invention comprises the following steps: Step 1: Determine the thickness-to-width ratio λ of the front wall of the cable tower; Step 2: Select the cable tower pull-strut model to be adopted according to the λ value, and calculate the geometric parameters; Step 3: Solve the maximum tie rod Internal force; Step 4: Calculate the required number of prestressed tendons according to the maximum internal force of the tie rods; Step 5: Arrange the prestressed tendons according to the direction of the tie rods in the model. The invention can be used for the quantitative design of the prestress in the anchorage area of ​​the cable tower, and proposes a tension-compression bar model in the anchorage area of ​​the cable tower with clear geometric parameters that can be directly used by engineers. The invention has strong versatility, high design efficiency, clear mechanics concept and high calculation accuracy, and avoids the blindness and low efficiency of relying on the experience of designers and a large number of trial calculations in the design of traditional cable tower anchorage areas.

The invention provides a method for establishing a wind speed-power conversion probability model. The method includes the following steps that a history dataset is established; wind speed sections are divided; the probability density of power is estimated; the wind speed-power conversion probability mode is established. A mapping relation between wind speed and wind electricity power is established based on technologies including power probability statistics and the like, accuracy of establishing the wind speed-power probability model is improved, and the efficiency of establishing the model is improved, so that accuracy of predicating the wind electricity power is improved.

The invention discloses a preparation method of a small yellow croaker flavor material, which comprises the following steps: cooking fresh small yellow croaker leftovers, and mincing to obtain a sizing agent of the small yellow croaker leftovers; mixing the slurry with water, adding papain for enzymolysis, and then centrifuging to obtain enzymatic hydrolysate of the small yellow croaker leftovers; adding a fishy smell removing agent into the enzymatic hydrolysate, and performing fishy smell removing treatment under a water bath condition to obtain a base material of the small yellow croaker flavor material; and adding seasonings into the base material, blending the flavor of the base material, and sterilizing to obtain a finished product of the small yellow croaker flavor material. The small yellow croaker flavor material obtained by using the method disclosed by the invention not only contains rich nutritional ingredients, but also has the unique faint scent and delicious flavor of small yellow croakers, is free from fishy odor and is clear and transparent brown yellow. According to the preparation method, the processing time is greatly shortened, and the cost is saved; and meanwhile, the obtained small yellow croaker flavor material is low in salt content, and meets the diet concept of modern people pursuing health and low salt. The product disclosed by the invention is simple in production equipment, short in production period, low in production cost and easy to realize industrial production.