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| control-circuit voltage | |||
| control circuit voltage | |||
| 控制电路电压: 10 phrases in 8 subjects |
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| Automobiles | 2 |
| Compressors | 1 |
| Construction | 1 |
| Electric machinery | 2 |
| Information technology | 1 |
| Metallurgy | 1 |
| Technology | 1 |
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