flap-type valve

英 美
  • 瓣型阀门
  • flap n.拍打;拍打声;片状垂悬物;副翼;不安v.拍打;鼓翼而飞
  • type n.类型;典型;铅字v.打字
  • valve n.瓣膜;真空管;阀门;电子管
    1. A needle valve with a threaded spindle is unscrewed to open a passage for the liquid to escape to the reservoir from the cylinder when the jack is required to be lowered.
      当千斤顶需要下降时,一个带锭子的针型阀门被放松来使液体通过圆筒流回储备液箱。