We can figure out the chemical makeup of another star by comparing the spectrum pattern it has to the pattern of elements in the laboratory.

我们可以通过比较恒星的光谱和实验室元素的光谱来确定某颗恒星是由某种元素构成的。

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Just as in a container, molecules in an inter-galactic gas cloud absorb certain wavelengths and leave a pattern of dark lines on a quasar's spectrum.

ECONOMIST: Fundamental physics

For all the potential that such an agreement could provide, talks between the companies are currently said to be in a holding pattern while the FCC completes its review of Dish's spectrum holdings.

ENGADGET: Sprint reportedly wooing Dish with spectrum sharing and MVNO possibilities