“comet”的概念、定义、习题解题方法及翻译-物理辞典

单词	comet
释义	comet A small body that travels around the sun in an eccentric orbit. Short-period comets have orbital periods of less than 150 years. The others have very long periods, some exceeding 100 000 years. Typical comets have three components: the nucleus of ice and dust, the coma of gas and dust, and the comet tail , which only appears when the comet is near the sun (it, too, consists of gas and dust). The nuclei of most comets are thought to be ‘dirty snowballs’ about one kilometre in diameter, although the solar system has a few comets with nuclei exceeding 10 km in diameter. The coma may be 10⁴–10⁵ km in diameter, and the tail can be 10⁷ km in length. See also Halley's comet
随便看	bumping Bunsen burner Bunsen cell Bunsen, Robert Wilhelm buoyancy bus busbar butterfly effect BWR bypass capacitor byte Bénard cell c.g.s. units cadmium cell caesium clock Cahn-Hilliard model calculus californium caloric theory calorie Calorie calorific value calorimeter calx camera

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。