To prevent cryogenic liquids or cold gas from being trapped in piping between valves, the piping should be equipped with pressure relief devices.

 
  • 為了防止低溫液體或低溫氣體積聚在閥門(mén)之間的管道內,要給管道配備減壓裝置。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan