“steady-state theory”的概念、定义、习题解题方法及翻译-物理辞典

单词	steady-state theory
释义	steady-state theory The cosmological theory that the universe has always existed in a steady state, that it had no beginning, will have no end, and has a constant mean density. To compensate for the observed expansion of the universe this theory postulates that matter is created throughout the universe at a rate of about 10^-10 nucleon per metre cubed per year as a property of space. Because it has failed to account for the microwave background radiation or the evidence of evolution in the universe it has lost favour to the big-bang theory. It was first proposed by Hermann Bondi (1919– ), Thomas Gold (1920– ), and Fred Hoyle in 1948
随便看	self-similarity semiclassical approximation semiconductor semiconductor diode semiconductor laser semipermeable membrane series series circuits series-wound machine sets sextant shadow shear modulus shearing force shell model sherardizing shielding SHM shock wave Shockley, William short-sightedness shower shunt SI units sideband

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。