扶手吊環英文是什麼?

扶手吊環-handrail stray-ring

扶手-handrail
輕鐵車廂裡面的扶手吊環, 英文是 handrail stray-ring


圖片參考：http://www.hk-phy.org/contextual/mechanics/for/inertia/1-03.jpg
Fig. 1-3 Holding the stray-ring (left) or leaning on the glass besides the seat (right) may help passengers to balance their body in an accelerating/decelerating train.

2012-02-25 17:26:30 補充：
一般這類吊環產品英文也有簡單叫hand ring 或handle ring的。

2012-02-25 17:39:07 補充：
另外還有叫safety hand ring的。