-
The metal diaphragms act as the seal at the top of the valve.
金属横膈膜在阀门的顶部作为密封。
youdao
-
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。
youdao
-
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。
youdao