retarder control valve spool  减速器控制阀滑阀

retarder valve  减速器阀

scraper retarder valve  铲运机减速器阀

apron control valve spool  闸门控制阀芯

attachment valve spool  附属阀芯

auxiliary valve spool  辅助阀芯

boom control valve spool  动臂控制阀芯

boom cylinder control valve spool  动臂油缸控制阀芯

boom valve spool  动臂阀芯

bowl valve spool  挖斗滑阀

brake control valve spool  制动器控制阀阀芯

brake valve spool  (或1-)左(旋)的; 制动阀芯; 制动阀阀芯

bucket control valve spool  铲斗控制阀滑阀

bulldozer lift valve spool  推土机升降阀阀芯

bulldozer valve spool  推土机控制阀阀芯

charging valve spool  充气阀芯

clutch selector valve spool  离合器选择器阀芯

clutch valve spool  离合器阀芯

combination valve spool  组合阀阀芯