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65 results about "Green fruit" patented technology

Saccharomyces cerevisiae CEC NRI16 and application thereof

The invention relates to the technical field of microorganisms, in particular to saccharomyces cerevisiae CEC NRI16 and application thereof. The invention provides Saccharomyces cerevisiae CEC NRI16, which is used for wine brewing, can significantly improve the variety aroma and the content of ester substances and terpene substances in dry white wine, especially can promote the generation of ethyl acetate, isoamyl acetate, ethyl hexanoate, ethyl caprate and linalool, reduces the generation of isoamyl alcohol, and improves the yield of wine. The grape wine presents richer fragrance of green fruits such as pears and apples and fragrance of flower fragrance such as violet and roses, and the raw and green taste is effectively reduced. The yeast strain is strong in fermentation capacity and excellent in fermentation performance, and has great value in the aspects of maintaining the typicality of grape wine varieties and enhancing flavor characteristics.
Owner:NORTHWEST A & F UNIV

Method for repairing tomato fruit softening inhibition caused by penthiopyrad application

The invention provides a method for repairing inhibition of penthiopyrad stress on fleshy fruit softening. According to the method, nano-selenium is applied in the immature green fruit period of fleshy fruits, and fruit softening is positively regulated and controlled, so that inhibition of penthiopyrad stress on fleshy fruit softening is repaired. The nano-selenium and penthiopyrad are combined in the immature green fruit period, so that the loss caused by the penthiopyrad to the fruit softening of the fleshy fruit crops can be effectively repaired. And the nano-selenium has the advantages of high bioavailability, good safety, strong oxidation resistance and the like.
Owner:TIANJIN ACAD OF AGRI SCI

Preparation method of sweet white wine with Jones-Yao pulp

The invention relates to the technical field of wine brewing, and discloses a preparation method of a viburnum macrocephalum pulp sweet white wine, which comprises the following steps: accurately harvesting viburnum macrocephalum pulp grapes, simultaneously removing diseased fruits and green fruits, treating the picked viburnum macrocephalum pulp grapes by adopting an air bag squeezing process, and then carrying out low-temperature clarification treatment to obtain grape juice. According to the preparation method of the viburnum macrocephalum pulp sweet white wine, through low-temperature squeezing and special yeast low-temperature fermentation processes, the retention rate of core terpene aroma substances of the viburnum macrocephalum pulp is larger than or equal to 90%, the finished product is rich in aroma, the attenuation rate of the aroma within the shelf life of 24 months is smaller than or equal to 15%, and the preparation method is far superior to a traditional process; the problem of low natural acidity of the Jones-dried scallop pulp is solved, residual sugar and acidity form golden balance, and the Jones-dried scallop pulp is full in sweet taste but not greasy; the palatability score is improved by 50% or above compared with that of a traditional process; through oak barrel aging process innovation, the finished product can present various flavor structures, the limitation of single flavor of a traditional product is broken through, and the high-end attribute is remarkable.
Owner:SINO FRENCH JOINT VENTURE DYNASTY WINERY

Method of improving shelf life of fruits and vegetables

To provide a method of improving the shelf life of fruits and vegetables.SOLUTION: The method of improving the shelf life of fruits and vegetables comprises a step of storing fruits and vegetables under refrigeration while they are in contact with a water-absorbent sheet impregnated with a citric acid solution.SELECTED DRAWING: None
Owner:KAO CORP

Medicinal and edible composite effervescent tablet for treating gout as well as preparation method and application of medicinal and edible composite effervescent tablet

The invention relates to the technical field of effervescent tablets, and particularly discloses a medicinal and edible composite effervescent tablet for treating gout as well as a preparation method and application of the medicinal and edible composite effervescent tablet. The medicinal and edible composite effervescent tablets are prepared from the following raw materials: 10-30 parts of a honeysuckle extract, 10-30 parts of a Chinese olive extract, 10-30 parts of a gardenia extract, 10-30 parts of a dandelion extract, 3-8 parts of a disintegrating agent, 5-10 parts of a sweetening agent, 1-5 parts of a filling agent, 2-5 parts of a wetting agent, 15-30 parts of an acid source and 25-40 parts of an alkali source. According to the prepared medicinal and edible composite effervescent tablet, traditional Chinese medicine components with gout treatment effects are organically combined with nutrients, and a safe and effective new dietary therapy choice is provided for patients.
Owner:HEILONGJIANG UNIV OF CHINESE MEDICINE

Coffee fruit decorticator

ActiveCN309796370SEngineeringGreen fruit
1. The name of the design product: coffee fruit degumming machine. 2. The use of the design product: coffee fruit peeling, green fruit selection, degumming. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view. 5. The bottom of the design product is not easily visible or not visible during use, and the top view is omitted.
Owner:YUNNAN ASAHIKAWA AGRICULTURAL MACHINERY CO LTD

A rotary torreya green fruit peeling machine

The invention discloses a rotary torreya fruit peel grater, which comprises a rotary disk, a hopper, a discharger, and a plurality of torreya fruit peel grating devices. The torreya fruit peel grating devices comprise a torreya fruit clamping and rotating device and a flexible torreya fruit peel grating device. The torreya fruit clamping and rotating device comprises a guide positioner, a lower pressure head, and an upper pressure head. The flexible torreya fruit peel grating device comprises a peel grater and a peel grater rotation driver. The rotary torreya fruit peel grater of the present invention is suitable for grating the peel of immature torreya fruit, especially for torreya fruit with the peel and kernel tightly adhered, and is also suitable for grating the peel of mature torreya fruit. In particular, when the rotary torreya fruit peel grater of the present invention is used to rub the peel of torreya fruit, the kernel of the torreya fruit will not be broken, and it is beneficial to protecting the eyes at both ends of the torreya fruit, ensuring the integrity of the torreya kernel, which is beneficial to the later fermentation.
Owner:HANGZHOU PROJECT & RES INST OF ELECTRO MECHANIC & LIGHT IND

Packaging bottle (green fruit sweet sauce monk fruit cola bottled village super version)

ActiveCN309238065SBiotechnologyBottle
1. The name of the product of this design: packaging bottle (green fruit sweet sauce flavor monk fruit cola bottle village super version). 2. Purpose of the product of this design: used for filling beverages. 3. The design key point of this appearance design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the key points of the design: main view.
Owner:HUNAN AIDALUN TECH CO LTD

High-fruiting-rate prinsepia utilis royle grafting propagation method

InactiveCN119344103AGraftingRootstockShoot
The invention discloses a high-fruiting-rate prinsepia utilis royle grafting propagation method. The method comprises the following steps: 1) selecting at least one-year-old prinsepia utilis royle seedlings which grow well and are free of plant diseases and insect pests, and the overground part diameter of the prinsepia utilis royle seedlings is 0.5-2 cm as stocks; 2) selecting middle and upper parts of excellent seed trees without diseases and insect pests to grow well as scions; 5) wrapping the cut of the cut stock and the scion with a grafting film, fixing the scion in the cut of the stock after wrapping to keep the stock and the scion forming layer tightly attached and fixed, exposing the axillary bud position on the scion without wrapping other positions, and setting a sunshade net after grafting is completed; and 6) when the young sprouts on the scions grow to 15-20cm, removing the grafting film, and cutting at least three parallel long-line wounds on the epidermis of the rootstock branches and the scion branches by using the tip of the grafting knife. According to the method, later-stage tedious management is not needed, more than 93% of prinsepia utilis royle seedlings bred through grafting bloom and bear fruits in one year after field planting, the character of the born seeds is basically consistent with that of seed trees, and a good foundation is laid for vegetative propagation of prinsepia utilis royle.
Owner:YUNNAN ACAD OF FORESTRY

Citrus green fruit tracking and counting method and system based on improved YOLOv7 model

The invention discloses a citrus green fruit tracking and counting method and system based on an improved YOLOv7 model. The method comprises the following steps: acquiring an image and constructing a training set; based on a YOLOv7 basic framework, introducing a SimAM attention mechanism module, and constructing a detection model; performing training and hyper-parameter optimization on the detection model based on the training set to obtain a trained detection model; and processing a to-be-detected video based on the trained detection model and a target tracking algorithm to generate a counting result. The system comprises an image acquisition module, a model construction module, a model training module and a model application module. According to the invention, the real-time detection precision and counting efficiency of the green citrus fruits can be improved. The method can be widely applied to the field of target counting.
Owner:SOUTH CHINA AGRICULTURAL UNIVERSITY

Medicinal and edible traditional Chinese medicine composition for relieving cough, preparation, application and preparation method of medicinal and edible traditional Chinese medicine composition

The invention relates to a medicinal and edible traditional Chinese medicine composition for relieving cough, a preparation, application and a preparation method of the medicinal and edible traditional Chinese medicine composition, and the medicinal and edible traditional Chinese medicine composition is prepared from the following raw materials: platycodon grandiflorum, fructus perillae, lucid ganoderma, houttuynia cordata, almonds, Chinese olives, ginseng, folium mori, rhizoma phragmitis and dihydroquercetin. The large-scale industrial development is easy; the traditional Chinese medicine composition can be used for improving the respiratory tract damp and toxic environment and the inflammatory state, the cough relieving effect is remarkable, the raw materials used in the formula are all medicine and food homologous traditional Chinese medicines and new resource food, safety is high, and patient compliance is good.
Owner:SHANGHAI SHIDAO INTELLIGENT MEDICAL TECH CO LTD

Coffee fruit peeling all-in-one machine

ActiveCN309787802SBiotechnologyEngineering
1. The name of the design product: coffee fruit peeling all-in-one machine. 2. The use of the design product: coffee fruit peeling, green fruit selection, and degumming. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view. 5. The bottom of the design product is not easily visible or not visible during use, and the top view is omitted.
Owner:YUNNAN ASAHIKAWA AGRICULTURAL MACHINERY CO LTD

Batch automatic picking device for green walnuts

The utility model provides an automatic batch picking device for green walnuts. The automatic batch picking device comprises a handheld rod and a picking basket. The picking basket is mounted at the upper end of the handheld rod, and a picking mechanism is mounted in the picking basket; the picking mechanism comprises a rotating shaft, U-shaped picking rods and a motor I, the rotating shaft is vertically mounted between two mounting plates arranged in the picking frame through a bearing, the U-shaped picking rods are uniformly mounted on the side wall of the rotating shaft, and the motor I is mounted on the side wall of the picking frame and is in transmission connection with a transmission rod horizontally mounted on the inner wall of the picking frame; and the transmission rod is in transmission connection with the rotating rod through a worm and gear mechanism. The bottom of the picking basket is connected with a conveying hose facilitating downward conveying of walnuts. According to the walnut green fruit picking device, walnut green fruits are beaten down from branches and fall into the picking basket through rotary beating of the U-shaped picking rod, and picking of the walnut green fruits is completed, so that the walnut green fruits are automatically picked in batches, the situation that walnuts are manually picked one by one is avoided, and the walnut picking efficiency is greatly improved.
Owner:DAYAO XINJIE FOOD CO LTD

Preservative suitable for green fruits and vegetables and preparation method and application thereof

The invention belongs to the technical field of fruit and vegetable fresh-keeping, and provides a fresh-keeping agent suitable for green fruits and vegetables and a preparation method and application of the fresh-keeping agent in order to solve the problem that a green-keeping method and the optimal fresh-keeping color of fresh-cut broccoli are not clear in the prior art. The film-forming agent is composed of chitosan and konjaku flour, and the active components comprise a gardenia extract and tea polyphenol. The fresh-keeping agent belongs to food pigment and biological fresh-keeping agents, is safe, excellent, green and environment-friendly, and when the method provided by the invention is used for inhibiting and controlling the yellowing of the fresh-cut broccoli, the yellowing degree of the fresh-cut broccoli can be obviously controlled, the rising of the yellowing rate and the yellowing index of the fresh-cut broccoli can be effectively inhibited, and relatively good sensory quality can be maintained. Moreover, all the raw materials used in the preservative are easy to obtain, and the preservative belongs to food pigments and biological preservatives, is safe, excellent, green and environment-friendly, is simple in preparation method, and is beneficial to popularization and application of actual production.
Owner:BOHAI UNIV

Method for preventing and treating insect pests of facility crops by using functional plants

The invention belongs to the technical field of agricultural pest control and provides a method for controlling facility crop pests by using functional plants. The method comprises the following steps: transplanting cnidium monnieri seedlings into a crop field before field planting or seedling emergence of crops; hanging the cnidium monnieri in the potted flowering period above crops planted on the ground, and replacing the cnidium monnieri with a new potted cnidium monnieri in the flowering period after the cnidium monnieri enters a green fruit period; releasing egg cards of natural enemies, orius sativus, encarsia formosa and harmonia axyridis 3 days after the potted snake bed is placed; when the cnidium monnieri on the ground enters the jointing stage, cnidium monnieri seeds are sown in the original position. According to the method, the crop yield is not reduced, meanwhile, damage caused by outbreak of pest populations is avoided, meanwhile, use of chemical insecticides is reduced, and green production of crops is promoted. The functional plant cnidium monnieri is planted in the greenhouse and used for conserving natural enemy insects released in the greenhouse, conserving of the natural enemy insects and prevention and control of pests can be considered at the same time, population growth of the natural enemy insects is promoted, and the cost of manually releasing natural enemies is reduced.
Owner:SHANDONG ACADEMY OF AGRICULTURAL SCIENCES

Green fruit and vegetable disease and insect pest prevention and control device with trapping and killing structure

The green prevention and control device comprises a trapping cylinder with the upper end and the lower end opened, the upper end of the trapping cylinder is detachably connected with an air blowing assembly communicated with the trapping cylinder, an air guiding assembly is arranged at the position, close to the upper end of the trapping cylinder, of the inner wall of the trapping cylinder, and a storage box is arranged above the air guiding assembly in a matched mode; a breathable net cylinder communicated with the trapping cylinder is arranged at the position, at the air guide assembly, of the outer wall of the trapping cylinder, the portion, below the breathable net cylinder, of the outer wall of the trapping cylinder is communicated with a pest inlet pipe capable of preventing pests from escaping in an inclined and downward mode from outside to inside, a connecting frame is arranged below the inner wall of the trapping cylinder, and the lower end of the connecting frame is detachably connected with a liquid storage box. A water absorption cotton rope is detachably connected between the upper end of the outer wall of the liquid storage box and the lower end of the air guide assembly in a matched mode, and an insect collecting box is detachably connected to the lower end of the inner wall of the trapping cylinder. According to the insect trapping device, various insects can be trapped, the repelling effect cannot be achieved, and the killing effect cannot be affected by the number of the insects when the insects are trapped and killed.
Owner:HONGHE UNIVERSITY

SNPs closely related to purple stripes in pepper fruit, specific CAPS primers and their application

The present invention belongs to the technical field of pepper molecular breeding, and discloses SNPs, specific CAPS primers and applications that are closely related to purple stripes on pepper green fruits. The SNP site described in the present invention is located at position 184,011,859 of the pepper P10 chromosome. When the base is T, the pepper green fruit has purple stripes, and when the base is G, the pepper green fruit does not have the purple stripe feature. The present invention also provides a specific CAPS primer CAPS690-01 for detecting purple stripes on pepper green fruits, which can accurately detect whether pepper green fruits have purple stripe characteristics at the seedling stage, with high accuracy, significantly improving breeding efficiency and reducing breeding costs.
Owner:INST OF ECONOMIC CROP HUBEI ACADEMY OF AGRI SCI

Nut green peel fruit imaging positioning method based on laser radar

PendingCN119493130ARealize automatic filteringElectromagnetic wave reradiationFruit treeData set
The invention provides a nut green fruit imaging and positioning method based on a laser radar, and belongs to the technical field of nut green fruit imaging and positioning, and the method comprises the following steps: setting a longitudinal and transverse moving device of the laser radar, initially obtaining an initial three-dimensional image of a nut range by the laser radar, framing the initial three-dimensional image, and obtaining a final three-dimensional image of the nut range; then marking a plurality of feature points as identification points, constructing a three-dimensional coordinate system for the framed area, then performing coordinate marking on all points of the nut tree, moving the laser radar on the longitudinal and transverse moving devices, scanning by the laser radar to obtain three-dimensional images in a plurality of directions, and summarizing to obtain three-dimensional image sets of the nut tree in different directions; and fusing all the three-dimensional image sets to obtain a three-dimensional coordinate data set of the nut tree, finding out positions of all nut shapes, and outputting three-dimensional position points of the nuts. According to the method, the shielded nuts can be better displayed, and positioning is more accurate.
Owner:GUILIN UNIV OF TECH AT NANNING

Soap (Honey Green Fruit Extract Soap Square)

ActiveCN309641489SBiotechnologyGreen fruit
1. The name of the design product: soap (honey green fruit extract soap square). 2. The use of the design product: the design product is used for daily washing. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: perspective view.
Owner:胡小龙

Jacket (sleeves in the style of a Chinese collar)

1. Name of the designed product: coat (green fruit collar and sleeve). 2. Use of the designed product: for wearing. 3. Design points of the designed product: in shape. 4. Picture or photo best showing the design points: perspective view 1. 5. The submitted view is sufficient to express the design points of the product, and the top view and bottom view are omitted. 6. Other circumstances that need to be explained: the prosthesis model in the designed product is a prop and does not belong to the protected design.
Owner:JIANGXI INST OF FASHION TECH

Movable field nut harvesting, peeling and cleaning station

The invention discloses a movable field nut harvesting, peeling and cleaning station, and relates to the technical field of nut processing, the movable field nut harvesting, peeling and cleaning station comprises a tractor, a shelling mechanism arranged on the tractor, and a cleaning mechanism communicated with the shelling mechanism; the peeling mechanism comprises a hollow machine shell, a feeding hopper arranged above the machine shell, two peeling rollers horizontally arranged in the machine shell in parallel, a driving mechanism arranged outside the machine shell and used for driving the peeling rollers to rotate relatively, and a discharging mechanism arranged at the lower end of the machine shell and connected with the cleaning mechanism. The peeling roller of the peeling mechanism extrudes green fruits to separate fruit grains from green peels, and the peeling roller is provided with peeling teeth capable of stretching out and drawing back under stress; when large fruits pass through the peeling teeth, the peeling teeth retract, green peels can be removed, the situation that the fruits are crushed due to the fact that the fruits are too large is avoided, and when the fruits are small, the peeling teeth exert enough pressure on the green fruits under the action of the elastic component so that the fruits can be separated from the green peels.
Owner:LINCANG YINGKAI TECHNOLOGY CO LTD

Peeling and cleaning all-in-one machine for Chinese torreya green fruits by enzymolysis method

The utility model relates to the technical field of agricultural machinery, and discloses an enzymolysis method Chinese torreya green fruit peeling and cleaning all-in-one machine which comprises a main body structure (1), a roller (15) is arranged in the main body structure (1), a circulating enzyme method water pipe (2) is transversely arranged in the roller (15) in a penetrating mode, a scrubbing cap (12) is installed on the inner surface of the roller (15), and a semi-closed feeding port (3) is formed in one end of the roller (15). And the other end of the roller (15) is provided with a discharge port (1501) with an auger structure (13). According to the utility model, cyclic utilization of an enzymic method solution is realized by combining an enzymic method with roller peeling, so that the working flexibility of the peeling roller is improved, the peeling damage rate is low, and the efficiency is high; the roller prevents the materials from being scattered during forward rotation peeling work; the water tank is circulated, so that repeated utilization of an enzymatic peeling solution is realized, mixing of an enzymatic solution for forward rotation peeling and clear water for reverse rotation cleaning is avoided, the clear water for reverse rotation is discharged out of the water tank, and separation of the enzymatic peeling solution and the water for cleaning is realized.
Owner:ZHEJIANG FORESTRY UNIVERSITY

A method for simultaneously detecting contents of multiple active ingredients in Ficus hirta by HPLC

The application belongs to the technical field of natural fruit active substance detection, and discloses a method for simultaneously detecting the contents of multiple active components in green fruits based on HPLC, wherein the active components include seven main active components in green fruits, i.e., pyrogallol, gallic acid, epicatechin, ethyl gallate, p-coumaric acid, epigallocatechin and ellagic acid. The detection method established by the application is good and the instrument is precise, and the method has the technical advantages of good selectivity, high sensitivity and accuracy and reliability for detecting the contents of the main active components in green fruits, thereby providing a new analysis method and reliable basis for quality analysis and quality control of green fruits.
Owner:CHINA PHARM UNIV

Automatic green fruit slicing machine

The utility model relates to the technical field of fruit slicing machines, in particular to an automatic green fruit slicing machine which mainly comprises a supporting frame, a feeding box is installed on the right side of the top end of the supporting frame, a slicing box is installed on the left side of the feeding box, a collecting frame is arranged on the inner side of the supporting frame, and a pressing positioning assembly is arranged on the inner side of the feeding box. And the pressing and positioning assembly comprises an elastic supporting rod, the inner side of the elastic supporting rod is connected with a material pushing plate, and a synchronous sliding frame is installed at the top end of the material pushing plate. According to the automatic green fruit slicer, a material pushing plate is elastically extruded through an elastic supporting rod, fruits are pushed and extruded from the right side of a feeding box to the left side through the material pushing plate, slicing is conducted in cooperation with a slicing box, and a second tooth-shaped plate and an adjusting gear can be engaged through adjustment of the connecting position of an inserting pipe and a sleeve; after the adjusting gear rotates, the material pushing plate at the top end can be driven to move, the material pushing plate actively extrudes the fruits, fruit displacement in the slicing process is avoided, and the slicing flatness is improved.
Owner:HUNAN BINZHILANG IND GRP CO LTD

A method for early cultivation of a late-mature yellow-green apple variety in facilities

The application discloses a kind of late-maturing yellow-green apple variety facilities early planting methods, the application focuses on solving Venus gold, green water rhyme and so on late-maturing yellow-green variety facilities planting conditions, by selecting reasonable planting mode, timely shed temperature rise, scientific regulation and control of ground temperature and air temperature and humidity in different periods of facilities, flower and fruit management and fruit quality improvement technology, etc., through facilities and supporting cultivation technology innovation, so that late-maturing apple varieties such as Venus gold can bloom early in facilities, mature about 90 days earlier, and the fruit quality can reach the standard of normal open-field cultivation, solving the problem of lack of high-quality and high-grade yellow-green fruit products from July to October, and providing more high-end fruit products for consumers.
Owner:YANTAI ACAD OF AGRI SCI SHANDONG PROVINCE (YANTAI BRANCH OF SHANDONG ACAD OF AGRI SCI) +1

Comb (Gleditsia japonica)

ActiveCN309944585SBiotechnologyGleditsia
1. Name of the designed product: Comb (green fruit moon). 2. Use of the designed product: Comb for combing hair. 3. Design points of the designed product: Combination of shape and pattern. 4. Picture or photo best indicating the design points: Fig. 1.
Owner:JIANGSU URBAN & RURAL CONSTR VOCATIONAL COLLEGE

Ampelopsis grossedentata essential oil washing and care soap based on high-frequency extraction of Ampelopsis grossedentata stock solution

The invention relates to the technical field of washing and care soap, and particularly discloses ampelopsis grossedentata essential oil washing and care soap based on high-frequency extraction of an ampelopsis grossedentata stock solution and a preparation method. The ampelopsis grossedentata essential oil washing and care soap is prepared from the following raw materials in parts by weight: ampelopsis grossedentata stock solution; sodium hydroxide; ampelopsis grossedentata essential oil; fructus psoraleae essential oil; fructus cnidii essential oil; cortex dictamni essential oil; green tea seed and green fruit micromolecule oil; mango kernel small molecule oil; palm oil; coconut small molecule oil; the preparation method comprises the following steps: S1, preparing a vine tea stock solution; s2, preparing alkali liquor; s3, oil phase mixing and saponification; and S4, defoaming and forming. The ampelopsis grossedentata essential oil washing and care soap based on the high-frequency extracted ampelopsis grossedentata stock solution can be used for various personal care scenes such as daily face cleaning, body bathing and scalp care, and has the advantages that the retention rate of active ingredients is high, the cleaning power and mildness balance degree is good, plant essential oil synergistic interaction is achieved, and the product stability is good.
Owner:LAIFENG YOUWEI BIOTECHNOLOGY CO LTD

Packaging box (mint green fruit slice box)

ActiveCN309601408SMentha spicataEngineering
1. Name of the product in this design: Packaging Box (Mint Green Fruit Cutting Box). 2. Purpose of this design: For packaging boxes of fruits and other gifts. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key points: a 3D model.
Owner:丁峰