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The upper stem is threaded into the diaphragm retainer nut.
上阀杆通过丝口旋在横膈膜止动螺母里。
youdao
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The upper stem is threaded into the diaphragm retainer nut.
手轮下面是一个六角形外螺纹横膈膜止动螺母。
youdao
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The upper stem is threaded into the diaphragm retainer nut.
手轮下面是一个六角形外螺纹横膈膜止动螺母。
youdao