� �日点、远日点分别是行星距离太阳的最�点、最远点,所以同一行星在�日点速度最大,在远日点速度最小。 Template




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tomski� �日点、远日点分别是行星距离太阳的最�点、最远点,所以同一行星在�日点速度最大,在远日点速度最小。 coloring