feed pump blade 给水泵叶片

pump blade efficiency 水泵叶片效率

pump impeller blade 水泵叶轮片

adjustable axial-flow pump blade 全调节轴流泵叶片

adjustable blade pump [机] 叶片可调式泵

adjustable blade propeller pump 调节叶片螺桨泵 ; 可调叶片螺桨泵

adjustable-blade propeller pump 可调叶片式轴流泵

rotary moving blade vacuum pump 旋转刮板真空泵

blade propeller pump 可调叶片式轴流泵