bolt&for&pump 泵脚螺栓
Release discharge bolt to discharge the retained water if the pump will not be used for long.
长期停止使用时，应打开放水螺塞，将泵内的剩水排尽。
The paper introduces an adjustable compounding light-duty emulsion pump station used for temporary fore support at the roof-bolt face of underground heading roadway.
本文介绍煤矿井下掘进巷道锚杆支护工作面用于临时超前支护的一种可调配比式轻型乳化液泵站。
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