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关注:1
2013-05-23 12:21
求翻译:The interior of the valve body shall preferably have a straight waterway. The area of the waterway at any point within the valve body shall not be less than 60 percent of the nominal area of the pipe to which the valve is connected.是什么意思?![]() ![]() The interior of the valve body shall preferably have a straight waterway. The area of the waterway at any point within the valve body shall not be less than 60 percent of the nominal area of the pipe to which the valve is connected.
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