短語(yǔ)詞組短語(yǔ)pressure e differential recorder 壓差記錄儀Pressure and Differential Pressure 壓力以及差壓測(cè)量pressure e differential meter 壓差式流量計(jì)pressure -differential tubing safety valve 壓差式油管安全閥Pressure Differential Differential Drain Style 壓差式排水allowable pressure differential 允許壓差 返回 pressure differential