起重机方向控制
elevator directional control
双重控制机制
dual-controlled mechanism
船用齿轮方向控制阀
marine gear directional control valve
电磁方向控制阀
control valve
Solenoid directional control valve
电动液力方向控制阀
electro-hydraulic directional control valve
二位三通方向控制阀
two-position three way directional control valve
方向控制阀
alkaloid reagent
directional control valve
alternate forecast
三位四通方向控制阀
three-position four way directional control valve
向前方向控制阀
forward directional spool
液力方向控制阀
hydraulic directional control valve
液压控制阀方向滑阀
hydraulic control valve directional spool