back-roll
美
英 
英汉解释
例句
In its simpler form, the mechanism consists of a Cam operated lever to vibrate the back roll, called the whip roll.
比较简单的方式是机构中包括一个由凸轮控制的连杆,用以驱动后梁摆动。
A Pobe into Teaching Actions in the Air in Back-roll Jump
背越式跳高空中动作的教法探讨
Importance of combining run-up with take-off in back roll jump
背越式跳高中助跑与起跳结合的重要性