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The invention is an efficient positive vortex pump, which belongs to fluid machinery.
本发明是一种高效的正旋涡泵，属于流体机械。
youdao
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The concentrate delivery system employs a positive displacement pump.
浓缩物递送系统采用正位移泵。
youdao
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The concentrate delivery system employs a positive displacement pump.
浓缩物递送系统采用正位移泵。
youdao