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level control | |||
level control | |||
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level control | |||
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level control |
电平 控制 : 48 phrases in 14 subjects |
Air defense | 2 |
Automobiles | 3 |
Aviation | 4 |
Communications | 1 |
Electronics | 14 |
General | 3 |
Geophysics | 5 |
Information technology | 1 |
Metallurgy | 1 |
Nautical | 1 |
Space | 3 |
Technology | 8 |
Telecommunications | 1 |
Textile industry | 1 |