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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When the upper stem rides up and down on its threads it now moves the lower stem by a mechanical connection.

当上阀杆沿着它的螺纹上下运动时，通过机械连接带着下阀杆一起运动。

youdao

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

VOA: standard.2010.05.12