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关注：1
2013-05-23 12:21
求翻译：升压阀前后设置一个差压开关是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
升压阀前后设置一个差压开关
问题补充： |
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2013-05-23 12:21:38
Before and after the boost valve to set up a differential pressure switch
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2013-05-23 12:23:18
boost valve and set up a differential pressure switch
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2013-05-23 12:24:58
Around the back-up valve establishes a difference to press the switch
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2013-05-23 12:26:38
Boost valve before and after setting a differential pressure switch
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2013-05-23 12:28:18
null
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