转动速度

Assuming the angular velocity of the beam is given as a harmonic function of time, the rotating sandwich beam is regarded as a parametrically excited system.

假设电流变夹层梁绕固定轴线做随时间变化的简谐周期运动，将变速度转动梁作为一个时变参激振动系统，分析了不同结构和控制参数对失稳区域的影响。

The differential is an important assembly to let each road wheel turn at its own speed when it is necessary.

差速器是很重要的部件，它可使每个轮子在必要时以各自的速度转动。

To travel aroundthat circumference in 24 hours, a point on Earth's surface has to move at 1,038 mph(1,669 kph). A launch from Cape Canaveral, Florida, doesn't get as big a boost from

在地球表面的某一点上以每小时1038英里(约合每小时1669公里)的速度转动，才能在24小时内走完地球的一周。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。