The difference of the two spectra is the spectrum of the light coming directly from the planet.
两次所测光谱的有差异的部分就是直接来之于这颗行星的光谱。
2
The major emphasis of this course is on structure determination by way of interpreting the data (generally in the form of a spectrum or spectra) that each method provides.
本课程重点强调的是，如何通过分析每一种方法所提供的资料（通常是一个或多种图谱）来进行结构鑑定。
3
A numerical algorithm is set up for the retrieval of optical turbulence spectrum from high-frequency temporal spectra of a light wave propagating through a turbulent atmosphere.