两个相同的球围绕着远处相同距离的一点做相同速度的匀速圆�运动,那么这两个球是否有相对运动? 知乎 Template




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tomski两个相同的球围绕着远处相同距离的一点做相同速度的匀速圆�运动,那么这两个球是否有相对运动? 知乎 coloring