速度控制阀滑阀
speed control valve spool
双滑阀的悬挂控制阀
two-spool suspension valve
two-spool suspension control valve
吊钩马达控制阀滑阀
hook motor control valve spool
铲斗控制阀滑阀
bucket control valve spool
拖拉机减速器控制阀
tractor retarder control valve
减速器制动控制阀
retarder brake control valve
减速器液压控制阀
retarder hydraulic control valve
减速器手控制阀
retarder hand control valve
液压控制阀方向滑阀
hydraulic control valve directional spool
减速器控制阀检查
retarder control valve check
减速器空气控制阀
retarder air control valve
减速器空气减压阀的调节
retarder air pressure reducing valve adjustment
减速器空气减压阀
retarder air pressure reducing valve
减速器空气回路减压阀
retarder air circuit pressure reducing valve
减速器空气阀调节
retarder air valve adjustment