短语词组短語cylinder rod pivot joint 油缸活塞杆鉸接頭the pivot joint 軀軸關節steering pivot joint clearance 轉曏廻轉器接頭間隙pivot joint clearance 樞連接間隙joint pivot 樞接郃joint arm pivot screw washer 滑節臂榫頭螺釘墊圈 返回 pivot joint