三滑阀电磁阀
three-spool solenoid valve
喷油阀阀孔清洁
fuel injection valve orifice cleaning
铲斗控制阀滑阀
bucket control valve spool
吊钩马达控制阀滑阀
hook motor control valve spool
辅助制动阀滑阀
secondary brake valve spool
减速器控制阀滑阀
retarder control valve spool
减压阀滑阀
pressure reducing valve spool
快速响应阀滑阀
quick-response valve spool