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21. | pull-in frequency |
| 引入频率 |
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22. | This product is suitable for dynamic force lead-in circuits in mining enterprises and power circuits |
| 本产品适用于煤矿企业动力引入及矿区的电力线路中。 |
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23. | introduce into; Bring into |
| 引入;置入 |
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24. | introduced cross |
| 引入杂交 |
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25. | leading in pole |
| 引入杆 |
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26. | leading through |
| 引入套管 |
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27. | leading in wire |
| 引入线 |
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28. | introduction of air |
| 引入空气 |
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29. | leading-in terminal |
| 引入端子 |
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30. | calling indicator |
| 引入指示 |
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