| 单词 | spectral type |
| 释义 | spectral type [`spek·trǝl ´tīp] ASTRONOMY A label used to indicate the physical and chemical characteristics of a star as indicated by study of the star's spectra; for example, the stars in the spectral type known as class B are blue-white, and are referred to as helium stars because the dominant lines in their spectra are the lines in helium spectra. |
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