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关注:1
2013-05-23 12:21
求翻译:the device ash to be well grounded by direct contact with the earth in a brounding metal pipe or a grounding copper rod.是什么意思? 待解决
悬赏分:1
- 离问题结束还有
the device ash to be well grounded by direct contact with the earth in a brounding metal pipe or a grounding copper rod.
问题补充: |
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