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| 中继装置; 继电器组 | |||
| 继电器 | |||
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relay unit : 19 phrases in 8 subjects |
| Aviation | 5 |
| Communications | 1 |
| Computers | 1 |
| Electronics | 8 |
| Geophysics | 1 |
| Military | 1 |
| Space | 1 |
| Technology | 1 |
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