So their rotation speed slows down to compensate and keep their angular momentum the same.

因此它们的旋转速度减慢以补偿并保持它们的角动量相同。

So if the rotation speed changes, the way the mass is distributed also has to change to compensate, and vice versa.

因此，如果转速发生变化， 质量分布方式也必须改变以进行补偿， 反之亦然。

Rockets need all the speed they can get in order to break out of earth's gravity and the earth's natural rotation speed can give them a much-needed boost.

火箭需要尽可能快的速度来摆脱地球的引力，而地球的自然自转速度可以给它们提供急需的推动力。

For example, the process parameters, like the rotation speed of the machine, how quickly you fill it, the type of fuel you use, the raw materials and their exact chemical composition.

生产制造的程序参数，如机器的转速、需要填装多快、使用何种燃料、原物料以及它们确切的化学成分。