We shall see that(7. 5. 25)is none other than the celebrated Snell'slaw applied to elastic waves.
我们很快就将看到，（7．5．25）恰恰就是应用弹性波上的有名的斯涅耳定律。
2
Using the Snell'slaw in polar coordinates, the ionospheric refraction effects on the declination and right ascension determination is discussed in this paper.
本文利用极坐标下斯涅尔定律，系统地讨论了电离层折射对赤经赤纬的修正问题，并据此给出了射线描迹法。
3
In geophysics, reflection refers to the seismic energy or signal that returns from an interface of contrasting acoustic impedance, known as a reflector, according to Snell'slaw.