这个圆筒的体积有多少?What's the volume of this cylinder?通常平动和转动同时发生, 例如,圆筒的滚动.Often translation and rotation occur simultaneously, as in the case of a rolling drum.空气的分子会撞击圆筒的整个筒壁和上下两端.The molecules of air would bombard all s...

“圆筒的”的英语可以翻译为：cylindric ...