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positive displacement pump
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positive displacement pump
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容积泵
释
positive displacement pump
容积泵
依靠活塞、柱塞、隔膜、齿轮或叶片等工作件在泵体内做往复运动或回转运动,使泵体内若干个工作腔的容积周期性变化,而交替地吸入和排出液体的一种泵。
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