短语词组短语Propellor Shafts 传动轴Propellor agitator 推进式propellor blade 风向标Propellor pumps 螺旋桨泵airplane propellor 飞机螺旋桨图片propellor shaff 传动轴Dynamic Propellor 动态的螺旋桨图片polygon brain propellor 六角螺丝hex -head propellor 六角头螺钉 返回 propellor