1) front automatic elevation control valve
前自动提升控制阀
2) front automatic elevation control valve passage
前自动提升控制阀通道
3) front leg elevation control valve
前支腿提升控制阀
4) ground level front leg elevation control valve
平地机前腿提升控制阀
5) boom raise control valve housing
动臂提升控制阀壳
6) rear automatic elevation control valve
后自动上升[仰角]控制阀
参考词条