我之前说过,注意,轨道时间和逃逸速度,因2的平方根不同,如果你在某特定位置。
I mentioned earlier, notice that the orbital period and the escape velocity vary by a square root of two if you are at a particular position.
我来把更一般的形式,写出来吧,在一维空间中,位置和速度,作为时间函数的,一般形式,这里的加速度是一个常数。
I now would like to write down, in most general form the equation for the position and the velocity as a function of time for a one-dimensional motion whereby the acceleration is constant.
公路运输的优势是位置、时间和交货速度上的灵活性。
The advantages of road transport are flexibility of both location and time and speed of delivery.
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