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关注：1
2013-05-23 12:21
求翻译：.安装前应把管道和阀门内腔清理干净。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
.安装前应把管道和阀门内腔清理干净。
问题补充： |
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2013-05-23 12:21:38
Before installation of piping and valve cavity clean.
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2013-05-23 12:23:18
Before installing the pipe and valve cavity clean.
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2013-05-23 12:24:58
. Before the installment should is clean the pipeline and the valve cavity cleaning up.
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2013-05-23 12:26:38
. Installation of pipes and valves in the cavity should be cleaned before.
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2013-05-23 12:28:18
视镜
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