Uniform motion is only hypothetical.

匀速运动只是一种假设性的运动,实际上并不存在.

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Moving things always travel in straight lines.

移动的物体总是沿直线做匀速运动.

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A rotating device in a tape recorder used to drive therecording medium at a constant speed.

磁带记录器中用来驱动记录介质作匀速运动的传动装置.

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Don't forget that these effects are absolutely symmetrical reference in uniform relative motion.

不要忘记的是,在相对匀速运动系统中,这两种效应是完全对称的.

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The realization of the picture Wizard of uniform movement, picture refresh, mouse input.

实现了图片精灵的匀速运动, 图片的刷新, 鼠标的输入.

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