“spectral class”的概念、定义、习题解题方法及翻译-物理辞典

单词	spectral class
释义	spectral class(spectral type) A form of classification used for stars, based on their spectra. The Harvard classification , introduced in 1890 and modified in the 1920s, is based on the seven star types known as O, B, A, F, G, K, M: O hottest blue stars; ionized helium lines dominant B hot blue stars; neutral helium lines dominant, no ionized helium A blue blue-white stars; hydrogen lines dominant F white stars; metallic lines strengthen, hydrogen lines weaken G yellow stars; ionized calcium lines dominant K orange-red stars; neutral metallic lines dominant, some molecular bands M coolest red stars; molecular bands dominant
随便看	spectrograph spectrometer spectrophotometer spectroscope spectroscopic binary spectroscopy spectrum speculum speed speed of light speed of sound sphere spherical aberration spherical harmonics spherical mirror spherical polar coordinates spherometer spiegel spin spin glass spin wave spin-orbit coupling spin-statistics theorem spinodal curve spinodal decomposition

物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。