“background radiation”的概念、定义、习题解题方法及翻译-物理辞典

单词	background radiation
释义	background radiation Low intensity ionizing radiation present on the surface of the earth and in the atmosphere as a result of cosmic radiation and the presence of radioisotopes in the earth's rocks, soil, and atmosphere. The radioisotopes are either natural or the result of nuclear fallout or waste gas from power stations. Background counts must be taken into account when measuring the radiation produced by a specified source. See also microwave background radiation
随便看	Coulomb's law Coulomb, Charles Augustin de counter couple coupling coupling constant CP invariance CPT theorem CPU creep critical angle critical damping critical mass critical pressure critical reaction critical state critical temperature critical volume CRO Crookes, Sir William cross product cross section crucible cryogenic pump cryogenics

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。