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| 低电压跳闸 (trip) | |||
| 欠电压脱扣器 | |||
| 欠压释放 | |||
| 欠压脱扣器; 欠压断路器; 低电压跳闸; 低电压释放 | |||
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| 低电压断路器 | |||
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under-voltage release : 3 phrases in 1 subject |
| Technology | 3 |
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