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由于这种泵的结构和螺杆间存在的侧间隙，它可以输送非润滑性介质。
Owing to the pump structure and side clearance between screw, it can transport non-lubricative medium.
youdao
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自动泵没有“真空”侧，只有入口侧。
Automatic pump only has entrance side, and no "Vacuum" side.
youdao
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自动泵没有“真空”侧，只有入口侧。
Automatic pump only has entrance side, and no "Vacuum" side.
youdao