High water saturated vapour pressure leads to the more possible occurrence of cavitation phenomena in water hydraulic pump, and so as in sliding shoes hydraulic supporting without exception.

水的高饱和蒸汽压力使得水压泵中极易发生气蚀现象，滑靴静压支承也不例外。

The second class absorption heat pump can get hot water or vapour using heat potential difference of middle temperature exhaust gas and lower temperature sink.

第二类热泵可利用中间温度的废热与低温热源之间的热势差，制取热量少但温度高于中温废热的热水或蒸汽。

The vacuum pump may have a pumping mechanism that exposes the gas stream to water and wherein the water vapour is condensed from the gas stream.

真空泵可以具有抽吸机构，抽吸机构将气体暴露在水中，并且其中水蒸汽从气体流中冷凝。