单词	Keplerian
释义	Keplerian /kɛˈplɪrɪən / adjective Relating to or characteristic of the German astronomer Johannes Kepler or his works: the accuracy of Keplerian orbital data... The motion of an object falling through a bottomless pit is harmonic, not Keplerian. Keplerian beam expanders produce a real focus between the input and output lenses. Having a Keplerian system makes the problem more tractable, and less prone to model-dependent uncertainties.
随便看	ornithophily ornithopod ornithopter ornithorhynchous ornithoscopy ornithosis ornithuric acid ornithurine or no orné ornée oro- oro-anal Orobanche orobus orocline orocratic orofacial orogen orogenesis orogenetic orogenetically orogenic orogenically orogenic belt

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。