Because the brake clearance is influenced by axis moving, the swing of disk brake, its result is a variable quantity.

提升机闸瓦间隙大小受到轴窜、偏摆等的影响，所以其值是一个动态变化的量。

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The inclination, or tilt, of Earth's axis also varies periodically, moving between 22 degrees and 5 degrees.

地轴的倾角也会周期性地变化，在22度到5度之间移动。

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If the rover were not moving, the frequency distortions of its signals to Earth would reveal the rate of wobbling in Mars's axis.

如果探测器与火星保持静止，那么它向地球发出的信号将会产生频率畸变。由此，我们可以推算出火星轴线的扰动率。

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We said, "Let's take, for the simplest case that we can possibly imagine, namely a particle moving in one dimension along the x-axis with a constant acceleration a.

我们说过,"考虑我们可以想象的最简单的情况,即质点在一维空间运动,沿着 x 轴且保持恒定加速度 a

耶鲁公开课 - 基础物理课程节选