短语词组短語joint t lever 連接杆joint angle lever 曲杆knee joint lever 膝關節挺子toggle joint lever 肘節杆joint -bar lever 連接杆master cylinder lever joint 主動側關節throttle lever latch joint 節流杆彈鍵螺栓hinge and lever frame joint 鉸接杠杆式車架鉸接 返回 joint lever