单词	双向进给阀
释义	双向进给阀cross-feed valve
随便看	direct production cost direct product measure direct product representation direct product set direct program control direct-projection method direct projectivity direct proof direct proportion direct proportion ; direct ratio direct pyramidal tract direct pyrolysis direct quench aging direct quenching direct question direct questioning direct quotation direct r/3 direct r/3 供应炼程序 direct radial triangulation direct radiating surface direct radiation direct--radiation direct radiation grafting direct radiation proximity indicator