主题: 油气 【求助】泵与阀
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旧 May 10th, 2008, 09:41     #6
长乘宽
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作者: ldwlx 查看帖子
孔板流量计!
孔板的要求还要多。除了我上面说的那些,这压差怎样测量出来还有分别的。
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