好了，现在看清楚了：在这个地球切面上，我们深入地心的这把光剑和赤道线的夹角就是我们的纬度啊！

Now it becomes clearer: on this plane, the angle between the light from the light saber and the Equator is our latitude!

youdao

在研究四波耦合时，分别讨论了在三种BSO晶体切面上，信号光和向前泵浦光的的偏偏振振态态互相平行和存在夹角时相位共轭反射率的特性；

Studying four-wave mixing, we get the phase-conjugate reflectivity in three cut planes in BSO when the polarization of signal beam and pump beam are parallel or not parallel.

youdao