“heat shield”的概念、定义、习题解题方法及翻译-物理辞典

单词	heat shield
释义	heat shield A specially prepared surface that prevents a spacecraft or capsule from overheating as it re-enters the earth's atmosphere. The surface is coated with a plastic impregnated with quartz fibres, which is heated by friction with air molecules as the craft enters the atmosphere, causing the outer layer to vaporize. In this way about 80% of the energy is reradiated and the craft is safeguarded from an excessive rise in temperature
随便看	buckyball buckytube bulk modulus 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

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。