pump out valve 抽空阀
The pump sucks air out through the valve.
气泵通过阀门把空气抽出去。
The concrete pump pumping out of step the reason of is analyzed, and through fitting gas valve, the question is settled.
分析了混凝土输送泵泵送不同步产生原因，通过安装排气阀解决该问题。
Based on the failure analysis of the fracturing pump valve chamber, a model for calculating its reliability under three-dimensional stress is established, and a computing program is worked out.
基于压裂泵阀箱的失效分析，建立了在三向应力作用下计算阀箱可靠性的模型，设计了计算程序。
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