相对速度变化 relative change of speed
- 驱动轮和销轨的相对速度按正弦函数变化。
The relative speed between driving wheel and pin rail varies with sinusoidal function. - 随后给出了一种以链路距离变化率作为相对速度来计算多普勒频移的新方法。
Then a new method of computing Doppler shift is presented, in which the variation of link length is regarded as the relative velocity between satellite and earth station. - 因此有两种可能的解释来说明相对速度的变化…
There are thus two possible explanations to account for the change in speed…
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