随着地轮垂直载荷的增加、抓地板高度的加大，地轮滑移率的均值、方差都减少。
With the increase of vertical load and height of ground wheel, ground wheel slide can be reduced.
在上面这张照片中，这轮因大气折射而显得有些变形的超级满月，紧挨着地平线，就好像正在美国波士顿市上空冉冉升起。
Seen here, the near perigee Full Moon still hugs the horizon, distorted by atmospheric refraction as it rises over Boston, Massachusetts, USA.
原因也许是误解了一些操作的细节问题，比如：左主轮先着地。
Now I think about it and realized in some little details I misunderstand the procedure. Specially the left main gear touch the ground first.
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