泵杆

With the continuous drive of the screw, the liquid will press from a seal cavity to another cavity in a spiral manner until it is pressed out of the pump body finally.

随着螺杆的连续传动，液体以螺旋形方式从一个密封腔压向另一个密封腔，最后挤出泵体。

Computational formulae of screw diameter D, screw-pitch and eccentricity e were deduced.

推导出泵螺杆直径D、导程T和偏心距e的计算公式。

If in a single screw on the shell lined with hard rubber, can also be used for conveyor belt particles suspension.

若在单螺杆泵的壳内衬上硬橡胶，还可用于输送带颗粒的悬浮液。

Especially for the development of the industry, the future of the three screw pump became better and better.

尤其是近几年工业的快速发展，使得三螺杆泵的应用前景越来越好。

The main aim in this paper is the basic theory of the three screw pump.

于是在研究中主要是对三螺杆泵做基础理论的研究。

The subject investigated in this paper is the three screw pump.

本文研究的对象是三螺杆泵。

Screw pump is a new type of machinery for the liquid transfer.

螺杆泵是一种新型的输送液体的机械。

Screw pump in recent years, there are a cost-effective, highly adaptive lifting technology.

螺杆泵是近年出现的一种经济有效、适应性很强的举升技术。

The single screw pump performance and the similarity theory application were studied.

对单螺杆泵特性及相似理论的应用进行了探讨。

Single screw pump small size, light weight, low noise, simple structure, easy maintenance.

单螺杆泵体积小，重量轻、噪声低，结构简单，维修方便

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。