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关注:1
2013-05-23 12:21
求翻译:All old electrical DBs with single pole 1-phase breakers for 3-phase supply must be replaced with single pole 3-phase breakers.是什么意思? 待解决
悬赏分:1
- 离问题结束还有
All old electrical DBs with single pole 1-phase breakers for 3-phase supply must be replaced with single pole 3-phase breakers.
问题补充: |
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