英语词汇“kelvin-helmholtz contraction”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	kelvin-helmholtz contraction
释义	Kelvin-Helmholtz contraction Kelvin–Helmholtz contraction (helm -holts) See Kelvin–Helmholtz timescale. Kelvin-Helmholtz contraction [′kel·vən ′helm‚hōlts kən‚trak·shən] (astrophysics) A contraction of a star once it is formed and before it is hot enough to ignite its hydrogen; the contraction converts gravitational potential energy into heat, some of which is radiated, with the remainder used to raise the internal temperature of the star.
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Kelvin-Helmholtz contraction