... Bend Around Center 是否重置到弯曲环绕的中心 Around Center Of Mass 根据物体质心旋转 Spiral Around The Center 螺旋围绕中心 ...
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The amount of angular momentum, say, a spinning skater has depends on both the speed of rotation, and the weight and distribution of mass around the center.
角动量的大小，取决于旋转中的滑冰选手的旋转速度、体重和绕旋转中心的质量分布。
Then as the star moves around the center of mass, you see that all these lines drift in unison.
随着恒星绕在，质量中心转动，你能看到所有这些线，一致得移动。
The center of mass is lower, around half of the machine height.
该中心的质量较低，大约一半的机器的高度。
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