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| |||
| 开关室 | |||
| 电话交换室; 开关间 | |||
| 机键室 | |||
| 配电室; 转换室; 交换机机房; 电压房 | |||
| 交换室; 交换机机房 | |||
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switch room : 12 phrases in 6 subjects |
| Electronics | 3 |
| General | 1 |
| Hydroelectric power stations | 2 |
| Oil / petroleum | 1 |
| Shipbuilding | 1 |
| Technology | 4 |
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