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| 微电流继电器 | |||
| 灵敏继电器 | |||
| 敏感继电器 | |||
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sensitive relay : 13 phrases in 6 subjects |
| Air defense | 1 |
| Electric machinery | 1 |
| Electronics | 3 |
| Geophysics | 1 |
| Hydroelectric power stations | 2 |
| Technology | 5 |
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