1115| 6
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管道壓降如何計(jì)算 |
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點(diǎn)評(píng)
哈哈 對(duì)的,我分析各蛋啊
大哥,,別扯淡了嘛,,沒有學(xué)過流體力學(xué),他分析個(gè)流,。咱不會(huì)咱不能坑人,,是吧?
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點(diǎn)評(píng)
外國(guó)人做的咱也不道啊
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