| 摘 要： | In astronomy,distant objects are studied through observation of electro-magnetic radiation of various wavelengths or through detection of cosmic rayparticles.The spectrum of the radiation consists of continuum and discrete-line components.Except for the continuous emission from the space plasmasor from the solid particles with finite temperature,most of the spectral fea-tures reflect the nature of the atoms or molecules in space which emit or ab-sorb the radiation.Then,how can one obtain the new astronomical informa-
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