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| 常开接点; а触点; 动合触点 | |||
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a-contact : 15 phrases in 11 subjects |
| China | 1 |
| Ecology | 1 |
| Economy | 2 |
| Electronics | 3 |
| General | 1 |
| Hydroelectric power stations | 2 |
| Project management | 1 |
| Sports | 1 |
| Technology | 1 |
| Water resources | 1 |
| Wrestling | 1 |
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