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emission control | |||
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radiological control |
辐射控制 : 22 phrases in 11 subjects |
Air defense | 2 |
Earth sciences | 2 |
Ecology | 1 |
Electronics | 4 |
General | 3 |
Geophysics | 1 |
Hydroelectric power stations | 1 |
Nuclear physics | 1 |
Refrigeration | 1 |
Space | 5 |
Technology | 1 |