减速器空气阀调节
retarder air valve adjustment
减速器空气减压阀
retarder air pressure reducing valve
铲运机减速器空气压力
scraper retarder air pressure
减速器空气压力开关
retarder air pressure switch
减压阀的调节
pressure reducing valve adjustment
pressure relief valve adjustment
调速器气压调定
governor air pressure setting
铲运机减速器空气管路
scraper retarder air line