This article described the design, principle of the mini ion pump and its application in the pumping process of X ray tube manufacture.

介绍微型溅射离子泵的结构、工作原理及其在X射线管制造中的应用。

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In the pumping process, if water levels continue to decline, we should pay attention not to let the exposed surface of the water running submersible pump.

在抽水过程中，若水位不断下降，要注意不要让潜水电泵露出水面运行。

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In accordance with this problem, a new pump of small diameter with double barrel has been developed. Experimental study of the deep pumping process has been conducted and attained a success.

针对这一问题，研究设计新型双筒式小直径抽油泵，进行了深抽采油工艺技术的试验研究，获得了成功，取得了良好的经济及社会效益。

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The process involves pumping water containing small percentages of other materials into the porous shale under pressure to hydraulically fracture it and release the trapped oil and gas.

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Fracking is a controversial process that involves pumping water and chemicals into shale rock at high pressure to extract gas.

BBC: Cuadrilla bids to resume Westby and Banks fracking

The process involves extracting gas from rocks by pumping in sand, water and chemicals.

BBC: Gas-fired power stations to be encouraged by government