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| collecting rings; collector rings | |||
| circuit ring | |||
| collector-shoe gear | |||
| running contact | |||
| collecting ring; collector ring | |||
| slip ring | |||
| 汇流环: 17 phrases in 6 subjects |
| Construction | 1 |
| Electric machinery | 3 |
| Electronics | 3 |
| Hydroelectric power stations | 3 |
| Rail transport | 1 |
| Technology | 6 |
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