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| 电源干线 | |||
| 输电干线 | |||
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| 主电路 | |||
| 主电线; 电力干线 | |||
| 主输电线 | |||
| 交流市电; 电源线 | |||
| 输电干线 | |||
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electric mains : 7 phrases in 5 subjects |
| Aviation | 1 |
| Business | 1 |
| Electric machinery | 1 |
| Lighting other than cinema | 1 |
| Technology | 3 |
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