pumping的例句大全

Erosion and repair of concrete buildings of water pumping irrigation works

提水灌溉工程混凝土建筑物的侵蚀及修复

Research of gearless pumping unit is still in its infancy in our country, a large number of contents is needed to be explored.

国内对无齿轮曳引式抽油机的研究尚处于起步阶段，有大量的内容需要研究者去探求。

The main contents of the paper include next parts, as following: (1) Explored the whole program of gearless traction oil pumping unit.

本文主要内容包括以下几点：（1）探究了无齿轮曳引式抽油机的整体方案。

Taking account of motor speed fluctuations, an equivalent mechanical model of rod pumping system is established.

考虑电动机转速的波动, 建立了有杆抽油系统的等效驱动力学模型.

Backwashingable filter can blow down at any moment and backflush the filter without pumping off, which improves the application effect, reduces the cost and elongate the working life.

可反清洗过滤器在不停泵的情况下随时排污和对过滤层进行反清洗作业，提高了使用效果，降低了使用成本，延长了使用寿命。