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关注：1
2013-05-23 12:21
求翻译：在每个疏水阀前后要安装阀门，宜采用闸阀，以便干维修疏水阀时使用是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
在每个疏水阀前后要安装阀门，宜采用闸阀，以便干维修疏水阀时使用
问题补充： |
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2013-05-23 12:21:38
To install the valve, before and after each trap should adopt the gate valve, in order to stem the maintenance trap
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2013-05-23 12:23:18
In each of the drainage valve before and after the use to be fitted with a valve, gate valve, in order to use when doing maintenance hydrophobic valve
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2013-05-23 12:24:58
Must install the valve around each draining valve, uses the gate valve suitably, in order to do services time the draining valve uses
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2013-05-23 12:26:38
To install the valves before and after each trap, the use of gate valves, to repair the following when using
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2013-05-23 12:28:18
视镜
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