When the pressure transients occur in low pressure pipelines such as the suction lines of pumps or the return lines of a hydraulic system, gas bubbles and cavitation will occur inside the fluid.
当压力脉动发生在液压泵的吸油管路或液压系统的回油管路等低压管路中时，会引起气泡和气穴的产生及破灭。
This paper proposes a new working face ventilation system: top gas tunnel small pillar outside the bottom return air laneway layout, in other words, which is gas tunnel location evolution.
本文提出了一种全新的综放工作面通风系统：顶层瓦斯巷小煤柱外错底层回风顺槽布置，具体是一种放顶煤工作面顶板排瓦斯巷位置的改进。
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