Where possible, leave the wrench on the valve so a quick closing of the valve can be made in the event of an emergency.
在可能的地方，把扳手留在阀门上，以便在紧急情况下可以迅速的关闭阀门。
Each valve adopts pneumatic controlling, which makes actions quick and safe, and no pollution to the surrounding environment.
各控制阀均采用气动控制，动作迅速可靠，对周围环境无污染。
This paper analyzes the quick oil-discharge valve in shift clutches of bulldozer, derives the general formula and compares it with other calculation methods.
本文对换档离合器中快速排油阀进行了分析，推导出普遍适用的计算公式，并与其它计算方法进行了比较。
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