单词	femtosecond
释义	femtosecond /ˈfɛmtə(ʊ)sɛkənd / (abbreviation fs) noun One quadrillionth of a second.With femtosecond pulses, scientists could for the first time directly observe the shifts in interatomic spacings that take place during reactions.... A femtosecond is to one second in duration what one second is to 30 million years. In other words, what could you do with a femtosecond x-ray source?
随便看	Anglo-Romany Anglo-Russian Anglo-Saxon Anglo-Saxondom Anglo-Saxonic Anglo-Saxonise Anglo-Saxonism Anglo-Saxonist Anglo-Saxonize Anglo-Saxony Anglo-Scandinavian Anglo-Soviet Anglosphere Anglo-Turkish Anglo-Vernacular Anglo-Welsh Angola Angolan angora angora wool angostura angostura bark Angostura bitters angrez Angrezi

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。