由于它和太阳之间的距离渐远，太阳的磁场所起的主导作用更少了，而行星X想要回到与太阳肩并肩对齐的状态。
As it puts distance between itself and the Sun, the Sun's magnetic field has less dominance, and Planet X wants to return to a side-by-side arrangement with the Sun.
地磁场矢量是卫星所在位置的函数，通过对地磁场的测量，即可实现对近地小卫星的自主导航。
Magnetic field vector is a function of the position where the satellite stays. Thus autonomous navigation for small satellite can be achieved by measuring the magnetic field vector.
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