单词	Hertzsprung–Russell diagram
释义	Hertzsprung–Russell diagram /ˈhəːtsˌsprʌŋ / noun Astronomy A two-dimensional graph, devised independently by Ejnar Hertzsprung (1873–1967) and Henry Norris Russell (1877–1957), in which the absolute magnitudes of stars are plotted against their spectral types. Stars are found to occupy only certain regions of such a diagram.The Hertzsprung-Russell Diagram is a plot of luminosity vs temperature, except that the temperature is decreasing to the right on the horizontal axis.... What follows is not an exhaustive study of stellar evolution. But it is, I hope, an introduction to stellar evolution, through the intermediary services of the Hertzsprung-Russell diagram. The Hertzsprung-Russell Diagram is a tool that shows relationships and differences between stars.
随便看	dig the dirt (or dig up dirt) dihedral dihybrid dihydric dihydrochalcone dihydropyridine dihydrotestosterone dihydroxyacetone Dijon Dijon mustard dik-dik dike dikkop diktat DIL Dilantin dilapidate dilapidated dilapidation dilatable dilatancy dilatation dilatation and curettage dilate dilation

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。