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【毎日一問】工程基礎知識(判断問題)20191111

2019-11-11View Original

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この投稿は、2019年11月11日18時10分にHP0377によって最終的に編集されました。計量ポンプのピストンが動いて容積が増大すると低圧が生じ、排出弁は自動的に閉じます。一方、吸入口の弁はポンプ外部の液体の圧力によって開きます。対

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