Grasp upper and lower stem lock nut with wrench and loosen.

用扳手抓住上部和下部阀杆锁紧螺母并且松开。

youdao

The lower stem is physically pulled away from the seat instead of being lifted away by the spring.

下阀杆是被从阀座上物理地推开，而不是被弹簧举起来。

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The lower stem is encased in a spring which forces the stem away from the seat when the valve is opened.

当手轮象开启位置旋转时，上阀杆离开横膈膜，弹簧推动下阀杆离开阀座。

youdao

It did not stem overpopulation, cut poverty, lower the divorce rate or put an end to unwanted pregnancies.

VOA: standard.2010.05.12