短語詞組短語equalising piston squeeze head 多觸頭壓頭hoist piston rod head block 起重機活塞桿塊piston rod cross head 活塞桿十字頭piston rod cro head 活塞桿十字頭operating cylinder piston head [車輛]風(fēng)缸鞲鞴頭piston head plate 活塞頂板piston head end 活塞頭端面;活塞頭端shock absorber piston head 減震器活塞頭dished piston head 凹形活塞頂 返回 piston head