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喷出 : 185 phrases in 16 subjects |
Aerodynamics | 2 |
Aviation | 1 |
Chemistry | 5 |
Drilling | 3 |
Electronics | 19 |
General | 48 |
Geology | 27 |
Metallurgy | 2 |
Mining | 1 |
Missiles | 1 |
Nuclear and fusion power | 1 |
Oil and gas technology | 1 |
Oil processing plants | 12 |
Production | 1 |
Technology | 60 |
Welding | 1 |