Slowly open vent needle valve just as air inlet opens. Record differential pressure.

 
  • 當空氣進(jìn)口開(kāi)啟時(shí),慢慢開(kāi)啟排氣針形閥。記錄壓差。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan