back-seated valve

基本解释

• [机械工程]后座阀

英汉例句

双语例句

• 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。

• back-seated valve更多例句

专业释义

机械工程

• 后座阀