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分 选 机 : 171 phrases in 18 subjects |
Agriculture | 30 |
Animal husbandry | 6 |
Architecture | 1 |
Automobiles | 1 |
Communications | 2 |
Desert science | 2 |
Earth sciences | 4 |
Electronics | 4 |
Environment | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
General | 2 |
Metallurgy | 34 |
Mineral processing | 1 |
Name of organization | 1 |
Oil / petroleum | 2 |
Shipbuilding | 1 |
Technology | 77 |
Wood processing | 1 |