There is a very big difference in physics between speed and velocity.
物理中速率和速度的概念,是泾渭分明的。
Velocity: the speed and direction of an object, or its rate of change in position.
速度：一个物体运动的方向和速率。或者是在某一位置的变速率。
Note that the words "velocity"and "speed"require explanation.
请注意，“速度”和“速率”这两个词需要解释。
Note that the words "velocity" and "speed" require explanation.
请注意，“速度”和“速率”这两个词需要解释。
A random speed along X, y, and Z that is added to the velocity.
一个沿着X,Y和Z轴的随机的速度，它被添加到当前的速度。
A random speed along X, y, and Z that is added to the velocity.
一个沿着X,Y和Z轴的随机的速度，它被添加到当前的速度。
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