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change pole controller | |||
pole changer; pole changing switch | |||
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distributor |
换 极器: 33 phrases in 10 subjects |
Air defense | 1 |
Aviation | 1 |
Ecology | 1 |
Electric machinery | 4 |
Electronics | 14 |
Geophysics | 1 |
Oil / petroleum | 1 |
Space | 1 |
Technology | 7 |
Telecommunications | 2 |