但是这个巨型冰结确为火星表面庞大陨石坑的墙阶的一部分。
But this colossal ice formation is actually a portion of the wall terraces of a huge crater on Mars.
所谓重力异常线性构造信号就是重力异常水平总梯度沿重力方向的一阶导数且是大于零值的那一部分。
So-called gravity anomaly linear structure signal is derivative of gravity anomaly level total gradient on gravity direction, and the derivatives must be greater than zero.
如果一阶楼梯的高度缩短到两毫米，大部分人将走楼梯。
If the height of a single step is off by as little as two millimeters.
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