“positive displacement pump”的概念、定义、翻译、参考文献-科学参考

单词	positive displacement pump
释义	positive displacement pump Encyclopedia 工学容积泵释 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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