However, if a star with planets captures another one, then one of its existing planets must change its orbit, and this could make the system unstable.
然而，假如一颗已有行星伴随的恒星再要捕获另一颗行星，那么已有行星中的一颗便会改变它的轨道，而这样的结果将会导致系统不稳定。
And the paper gives a simple formula which can make the ground tracks of the orbit repeat and recover the whole globe.
并且提出了使得地面轨迹形成覆盖循环所需要满足的简要公式。
If you have a huge rocket engine but a tiny amount of fuel, you probably won't make it to orbit.
如果你有一台巨大的火箭引擎但燃料较少，你可能无法让火箭进入轨道。
If you have a huge rocket engine but a tiny amount of fuel, you probably won't make it to orbit.
如果你有一台巨大的火箭引擎但燃料较少，你可能无法让火箭进入轨道。
应用推荐