Owing to the pump structure and side clearance between screw, it can transport non-lubricative medium.
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。
Active outside the side out of the pump screw driven by a prime mover.
一端伸出泵外的主动螺杆由原动机驱动。
In venous side, the speed of blood transfusion was controlled by a pump device.
静脉端采用推注泵控制输血速度；
Automatic pump only has entrance side, and no "Vacuum" side.
自动泵没有“真空”侧，只有入口侧。
Automatic pump only has entrance side, and no "Vacuum" side.
自动泵没有“真空”侧，只有入口侧。
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