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关注:1
2013-05-23 12:21
求翻译:Alarm check valves shall be supplied with a hand hole large enough to permit the removal of all internal working parts without removal of the valve body from the sprinkler system.是什么意思? 待解决
悬赏分:1
- 离问题结束还有
Alarm check valves shall be supplied with a hand hole large enough to permit the removal of all internal working parts without removal of the valve body from the sprinkler system.
问题补充: |
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