“sunspot”的概念、定义、习题解题方法及翻译-物理辞典

单词	sunspot
释义	sunspot A dark patch in the sun's photosphere resulting from a localized fall in temperature to about 4000 K. Most spots have a central very dark umbra surrounded by a lighter penumbra. Sunspots tend to occur in clusters and to last about two weeks. The number of sunspots visible fluctuates over an eleven-year cycle – often called the sunspot cycle . The cause is thought to be the presence of intense localized magnetic fields, which suppress the convection currents that bring hot gases to the photosphere
随便看	nonlinear optics nonmetal nonpolar compound nonrelativistic quantum theory nonrenormalization theorems nonstoichiometric compound normal normal modes normalizing not circuit note nova nuclear battery nuclear energy nuclear fission nuclear force nuclear fuel nuclear fusion nuclear isomerism nuclear magnetic resonance nuclear models nuclear moment nuclear physics nuclear power nuclear reaction

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。