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农作物 93 天文学 60 植物保护 47
天文学::天体物理学 43 天文学::天体物理学::高能天体物理学 42 畜牧、动物医学、狩猎、蚕、蜂 32
核科学技术 31 Physics 21 农业基础科学 18
农学(农艺学) 18 physics 15 经济学 15
astronomy & astrophysics; physics 12 植物学 12 物理学 11
分子生物学 9 有机化学 9 生物化学 9
管理学 9 园艺 8 宗教学 8
昆虫学 8 微生物学 7 环境科学 6
轻工业、手工业、生活服务业 6 图书馆、情报与文献学 5 天文学::恒星与银河系 5
普通生物学 5 法学 5 Instruments & Instrumentation; Nuclear Science & Technology; Physics; Spectroscopy 4
Materials Science 4 Science & Technology - Other Topics 4 physical geography; geology 4
光电子学 4 其他学科 4 民族学 4
环境污染及其防治 4 社会学 4 遗传学 4
Biochemistry & Molecular Biology 3 Chemistry 3 Materials Science, Multidisciplinary 3
genetics & heredity 3 半导体材料 3 天文学::天文学其他学科 3
教育学 3 等离子体物理 3 Astronomy & Astrophysics 2
Biochemistry & Molecular Biology; Biophysics 2 Biochemistry & Molecular Biology; Pharmacology & Pharmacy; Plant Sciences 2 Chemistry; Physics 2
Environmental Sciences 2 Genetics & Heredity 2 Metallurgy & Metallurgical Engineering 2
Pharmacology & Pharmacy; Endocrinology & Metabolism; Biochemistry & Molecular Biology 2 Physics, Multidisciplinary 2 Plant Sciences; Biochemistry & Molecular Biology 2
biochemistry & molecular biology; pharmacology & pharmacy 2 chemistry 2 gastroenterology & hepatology 2
general & internal medicine 2 geology 2 multidisciplinary sciences 2
plant sciences;pharmacology & pharmacy 2 science & technology - other topics 2 中国文学 2
人文、经济地理;其他学科 2 化学工业 2 历史学 2
大气科学(气象学) 2 天文学::星系与宇宙学 2 物理学::高能物理学 2
环境科学基础理论 2 空间环境 2 经济学;经济学 2
马克思主义 2 .Fission and Fusion Reactions; Radiation Measurements 1 531 Metallurgy and Metallography - 537 Heat Treatment - 539 Metals Corrosion and Protection; Metal Plating - 545 Iron and Steel 1
537.1 Heat Treatment Processes;701.1 Electricity: Basic Concepts and Phenomena;741.1 Light/Optics;804.2 Inorganic Compounds;932.1 High Energy Physics 1 543.2 Manganese and Alloys;546.3 Zinc and Alloys;547.2 Rare Earth Metals;741.1 Light/Optics;804.1 Organic Compounds 1 701.1 Electricity: Basic Concepts and Phenomena;714.2 Semiconductor Devices and Integrated Circuits;741.1 Light/Optics;801.4 Physical Chemistry;804 Chemical Products Generally;931.2 Physical Properties of Gases, Liquids and Solids 1
701.1 Electricity: Basic Concepts and Phenomena;741.1 Light/Optics;802.2 Chemical Reactions 1 701.1 electricity: basic concepts and phenomena;712.1 semiconducting materials;714.2 semiconductor devices and integrated circuits 1 712.1 Semiconducting Materials;714.2 Semiconductor Devices and Integrated Circuits;717.2 Optical Communication Equipment;741.1 Light/Optics;741.3 Optical Devices and Systems;801 Chemistry 1
712.1 Semiconducting Materials;714.2 Semiconductor Devices and Integrated Circuits;741.1 Light/Optics;931.3 Atomic and Molecular Physics 1 712.1 Semiconducting Materials;741.1 Light/Optics;802.3 Chemical Operations;804.2 Inorganic Compounds;931.3 Atomic and Molecular Physics;933.1.1 Crystal Lattice 1 712.1 Semiconducting Materials;741.1 Light/Optics;933.1.2 Crystal Growth 1
714.2 Semiconductor Devices and Integrated Circuits;921 Mathematics;931 Classical Physics; Quantum Theory; Relativity;933 Solid State Physics 1 714.2 semiconductor devices and integrated circuits;731.1 control systems 1 741.1 Light/Optics;741.3 Optical Devices and Systems 1
741.1 Light/Optics;804.2 Inorganic Compounds;921.5 Optimization Techniques;951 Materials Science 1 802.2 Chemical Reactions;804.1 Organic Compounds 1 802.2 Chemical Reactions;815.1 Polymeric Materials 1
804 Chemical Products Generally;802.3 Chemical Operations;714.2 Semiconductor Devices and Integrated Circuits;933.1 Crystalline Solids;712.1.2 Compound Semiconducting Materials;641.1 Thermodynamics;615.2 Solar Power;702.3 Solar Cells 1 821.4 Agricultural Products;901 Engineering Profession;901.4 Impact of Technology on Society;821.3 Agricultural Methods;913.1 Production Engineering;922.2 Mathematical Statistics;971 Social Sciences;921.5 Optimization Techniques;817.1 Polymer Products;443.3 Precipitation;446.1 Water Supply Systems;454.3 Ecology and Ecosystems;443.1 Atmospheric Properties;461.9 Biology;801.4 Physical Chemistry;802.3 Chemical Operations;483.1 Soils and Soil Mechanics 1 922.2 Mathematical Statistics;921 Mathematics;813.1 Coating Techniques;801 Chemistry;812.1 Ceramics;804 Chemical Products Generally;802.3 Chemical Operations;804.2 Inorganic Compounds;932.1 High Energy Physics;933.1 Crystalline Solids;951 Materials Science;944 Moisture, Pressure and Temperature, and Radiation Measuring Instruments;943 Mechanical and Miscellaneous Measuring Instruments;942 Electric and Electronic Measuring Instruments;941 Acoustical and Optical Measuring Instruments;933.2 Amorphous Solids;761 Nanotechnology;545.2 Iron Alloys;541.1 Aluminum;539.3 Metal Plating;421 Strength of Building Materials; Mechanical Properties;537.1 Heat Treatment Processes;481.3 Geophysics;443.1 Atmospheric Properties;531.2 Metallography;549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals;712.1.1 Single Element Semiconducting Materials;746 Imaging Techniques;741.3 Optical Devices and Systems;741.1 Light/Optics;715.1 Electronic Equipment, non-communication;714.2 Semiconductor Devices and Integrated Circuits;712.1.2 Compound Semiconducting Materials 1
931.2 Physical Properties of Gases, Liquids and Solids;921.6 Numerical Methods;741.1 Light/Optics;731.1 Control Systems;714.1 Electron Tubes;701.1 Electricity: Basic Concepts and Phenomena;421 Strength of Building Materials; Mechanical Properties 1 931.3 Atomic and Molecular Physics;813.1 Coating Techniques;802.2 Chemical Reactions;933.1.1 Crystal Lattice;741.3 Optical Devices and Systems;633.2 Vacuum Equipment;539.3 Metal Plating;714.2 Semiconductor Devices and Integrated Circuits 1 931.3 Atomic and Molecular Physics;822.2 Food Processing Operations;804 Chemical Products Generally;951 Materials Science;802.2 Chemical Reactions;714.2 Semiconductor Devices and Integrated Circuits;711.1 Electromagnetic Waves in Different Media;801.4 Physical Chemistry 1
931.3 Atomic and Molecular Physics;931.2 Physical Properties of Gases, Liquids and Solids;804 Chemical Products Generally;801.4 Physical Chemistry;741.3 Optical Devices and Systems;549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals;546.2 Tin and Alloys 1

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