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单词 hertzsprung-russell diagram
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WordReference Random House Unabridged Dictionary of American English © 2024
Hertz′sprung-Rus′sell di′agram  (hârt′sprŏŏng rus′əl),USA pronunciation [Astron.]
  1. Astronomythe graph showing the absolute magnitude plotted against the surface temperature for a group of stars. Also called H-R diagram. 
  • after Danish astronomer Ejnar Hertzsprung (1873–1967) and H. north, northern. Russell, who compiled the data on which it is based

Collins Concise English Dictionary © HarperCollins Publishers::
Hertzsprung-Russell diagram /ˈhɜːtssprʌŋˈrʌsəl/ n
  1. a graph in which the spectral types of stars are plotted against their absolute magnitudes. Stars fall into different groupings in different parts of the graph
Etymology: 20th Century: named after Ejnar Hertzsprung and Henry Norris Russell
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更新时间：2025/7/23 9:47:42