名词
中文翻译：时间导数
同义词：
['time derivative function', 'time derivative of a function']
例句：
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1. The speed of the car is directly proportional to the time derivative of the distance traveled.
汽车的速度与行驶距离的时间导数成正比。
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2. The graph shows the time derivative of the function at different points in time.
图表显示了函数在不同时间点的时间导数。
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3. In physics, the time derivative is used to describe how an object's velocity changes over time.
在物理学中，时间导数用于描述物体速度随时间的变化。