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astronomy & astrophysics; physics 91 Physics 53 physics 47
农作物 41 天文学 29 Astronomy & Astrophysics 24
农业基础科学 19 园艺 19 植物保护 16
天文学::天体物理学 15 Chemistry 14 天文学::星系与宇宙学 14
天文学::天体物理学::高能天体物理学 13 Materials Science 10 畜牧、动物医学、狩猎、蚕、蜂 9
Biochemistry & Molecular Biology 8 空间物理 8 经济学 8
Astronomy & Astrophysics; Physics 6 Cell Biology 6 Chemistry; Physics 6
plant sciences 6 农学(农艺学) 6 分子生物学 6
植物学 6 Electrochemistry 5 Metallurgy & Metallurgical Engineering 5
Pharmacology & Pharmacy 5 光电子学 5 宗教学 5
Materials Science, Multidisciplinary 4 Plant Sciences 4 Polymer Science 4
Science & Technology - Other Topics 4 Spectroscopy 4 science & technology - other topics 4
考古学 4 Chemistry, Multidisciplinary 3 Chemistry, Physical 3
Energy & Fuels 3 Immunology 3 Multidisciplinary Sciences 3
agronomy 3 chemistry 3 psychology; psychiatry 3
动物学 3 历史学 3 外国文学 3
天文学::恒星与银河系 3 普通生物学 3 环境科学 3
管理学 3 遗传学 3 Biochemistry & Molecular Biology; Cell Biology 2
Ecology 2 Electrochemistry; Energy & Fuels 2 Environmental Sciences 2
Materials Science, Characterization & Testing 2 Meteorology & Atmospheric Sciences 2 Nanoscience & Nanotechnology 2
Oceanography 2 Physics, Applied 2 Virology 2
chemistry; science & technology - other topics; materials science; physics 2 genetics & heredity 2 geology; paleontology 2
multidisciplinary sciences 2 图书馆、情报与文献学 2 大气科学(气象学) 2
天文学::天体物理学::实测天体物理学 2 微细加工技术 2 政治学 2
生物工程学(生物技术) 2 生物科学::植物学 2 矿床地质 2
社会科学总论 2 纳米科技与材料物理::新型功能材料与固体内耗 2 .Particle Accelerators; Atomic and Molecular Physics; Physical Properties of Gases, Liquids and Solids; Inorganic Compounds; Electricity: Basic Concepts and Phenomena; Molybdenum and Alloys; Structural Members and Shapes 1
412.1 Cement;421 Strength of Building Materials; Mechanical Properties;483.1 Soils and Soil Mechanics;802.2 Chemical Reactions;804.2 Inorganic Compounds;931.1 Mechanics 1 549 Nonferrous Metals and Alloys - 701 Electricity and Magnetism - 712 Electronic and Thermionic Materials - 801 Chemistry - 804 Chemical Products Generally 1 804.2 Inorganic Compounds;802.3 Chemical Operations;802.2 Chemical Reactions;931.2 Physical Properties of Gases, Liquids and Solids;483.1 Soils and Soil Mechanics;415 Metals, Plastics, Wood and Other Structural Materials;412.1 Cement;421 Strength of Building Materials; Mechanical Properties 1
Abnormal psychology,Emotional psychology 1 Agriculture; Chemistry; Business & Economics; Environmental Sciences & Ecology 1 Agriculture; Developmental Biology; Nutrition & Dietetics; Environmental Sciences & Ecology 1
Allergy 1 Biochemistry & Molecular Biology; Biophysics 1 Biochemistry & Molecular Biology; Chemistry 1
Biochemistry & Molecular Biology; Microbiology 1 Biodiversity & Conservation; Environmental Sciences & Ecology; Plant Sciences; Microbiology 1 Biodiversity Conservation; Genetics & Heredity 1
Biotechnology & Applied Microbiology 1 Chemistry, Physical; Electrochemistry; Energy & Fuels 1 Chemistry, Physical; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter 1
Chemistry; Engineering 1 Chemistry; Materials Science 1 Chemistry; Materials Science; Physics 1
Chemistry; Nuclear Science & Technology 1 Chemistry; Polymer Science 1 Chemistry; Science & Technology - Other Topics; Materials Science 1
Concrete;Strength of Building Materials; Mechanical Properties;Strength of Building Materials; Test Equipment and Methods; Soils and Soil Mechanics;Safety Engineering 1

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