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关注:1
2013-05-23 12:21
求翻译:An earthing bed shall be provided for each of ELV and telephone earthing respectively, the resulting earth resistance shall not be greater than 1 ohm.是什么意思? 待解决
悬赏分:1
- 离问题结束还有
An earthing bed shall be provided for each of ELV and telephone earthing respectively, the resulting earth resistance shall not be greater than 1 ohm.
问题补充: |
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