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| 单极开关; 单刀开关 | |||
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| 单极闸刀开关; 单刀式开关; 单刀式电闸 | |||
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| 单极开关 | |||
| 单刀开关 | |||
| single pole switch: 33 phrases in 10 subjects |
| Architecture | 1 |
| Aviation | 4 |
| Electronics | 3 |
| Geophysics | 1 |
| Hydroelectric power stations | 1 |
| Navigation | 2 |
| Nuclear and fusion power | 1 |
| Rail transport | 1 |
| Space | 3 |
| Technology | 16 |
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