Press down on knob and turn clockwise one full turn to properly engage threads on stem boss.

将旋钮压下，顺时针旋转一整圈，使其完全嵌入到阀杆轮箍的螺纹里。

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Press down on knob and turn clockwise one full turn to properly engage threads on stem boss.

将旋钮压下，顺时针旋转一整圈，使其完全嵌入到阀杆轮箍的螺纹里。

youdao