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真空泵如果液體進入管子，那對于液體的抽速和對于氣體的抽速... |
Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1，京ICP證050210號，浙公網(wǎng)安備33038202004372號 )
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發(fā)表于 2015-10-30 10:23:39
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