Screw pump features: the loss of small screw pump, good economic performance.

螺杆泵 特点为：螺杆泵损失小，经济性能好。

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Most cameras have a small screw-hole somewhere on them that allows the camera to be mounted to a tripod or other steady filming stand or structure.

大部分摄像机的上面都有一个小的螺丝孔用来把相机固定到一个三角架或者其他稳定的拍摄支架或结构上。

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Therefore, the pump body and screw cylindrical surface and screw and screw clearance should be as small as possible.

因此，泵体与螺杆外圆表面及螺杆与螺杆间隙应尽可能小些。

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When you do something like this there is a chance, albeit a small one that you can screw up your device- if you're worried about this, don't do it.

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They typically screw into a plate on the grave marker and are secured with a small chain.

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