The squares of the periodic times are to each other as the cubes of the mean distances.
周期时间的平方彼此之间是平均距离的立方。
-- Johannes Kepler 克卜勒
The squares of the periodic times are to each other as the cubes of the mean distances.
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The squares of the periodic times are to each other as the cubes of the mean distances.
周期时间的平方彼此之间是平均距离的立方。
-- Johannes Kepler 克卜勒
