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。
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。
At this point the upper stem has lost contact with the diaphragms.
在此时，上阀杆已经失去了同横膈膜的接触。
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。
At this point the upper stem has lost contact with the diaphragms. The valve should be opened to this point but not back seated.
在此时，上阀杆已经失去了同横膈膜的接触。阀门应该开启到这一点，但不能反向固定。
When the handwheel is rotated toward the open position the upper stem is moved away from the diaphragms allowing the spring to push the lower stem away from the seat.
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。
The lower part of its cotyledon node zone is cotyledon node zone-root transition region, and its upper part is cotyledon node zone-stem connection region.
在子叶节区下部存在子叶节区—根过渡区；子叶节区上部存在子叶节区—茎连接区。
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。
A step on the stem has now been back-seated against the upper portion of the valve body.
阀杆上的台阶现在已经坐落在阀体的上面部分上。
That's despite the fact that a gene expression profile of those cells shows little difference between them and stem cells with alternate fates isolated from the upper airways.
一旦到达损伤部位，这些细胞聚集形成“豆荚状”并启动肺泡相关基因的表达，而这些具有小的空心结构的肺泡正是肺部进行气体交换的位点。
That's despite the fact that a gene expression profile of those cells shows little difference between them and stem cells with alternate fates isolated from the upper airways.
一旦到达损伤部位，这些细胞聚集形成“豆荚状”并启动肺泡相关基因的表达，而这些具有小的空心结构的肺泡正是肺部进行气体交换的位点。
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