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1·So that's the reason why this semimajor axis is indeed such a horrendous number.

这就是为什么半长轴是,如此大的数字的原因。

2·The effect of rate of change for semimajor axis and inclination perturbation and drift of semimajor axis and inclination on the ground-track drift was analyzed.

分析了半长轴和倾角摄动变化率，以及初始半长轴和倾角偏置量对地面轨迹漂移的影响。