Pictured above is a series of images digitally stacked so that all of the stars images coincide. Here, Mars appears to trace out a loop in the sky.

上面图是一系列数码照片叠加而成的，让恒星重合，而火星貌似在天空中画了一个环。

youdao

We put forward the linearized wave impedance inversion which, starting from borehole-side trace, is performed trace by trace in a stacked seismic section.

本文提出了由井旁道出发逐道进行的叠后地震剖面的线性化波阻抗反演方法。

youdao