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关注：1
2013-05-23 12:21
求翻译：必须使用有可靠保护接地的网电源系统供电是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
必须使用有可靠保护接地的网电源系统供电
问题补充： |
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2013-05-23 12:21:38
Must have a reliable power supply system protective earth power network
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2013-05-23 12:23:18
You must use a reliable protection system grounding of electrical power supply network
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2013-05-23 12:24:58
Must use has the reliable protective earthing net electrical power system power supply
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2013-05-23 12:26:38
Must use a reliable protective grounding of power network power system
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2013-05-23 12:28:18
Must use and protect the power system of earth network and supply power reliably
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