单词	achromatic lens
释义	achromatic lens noun : a lens made by combining lenses of different glasses having different focal powers so that the light emerging from the lens forms an image practically free of chromatic aberration Illustration of achromatic lens A light source B crown glass C flint glass D corrected wavelength focal point Word History First Known Use 1796, in the meaning defined above Medical Definition achromatic lens noun : a compound lens made by combining lenses of different glasses (as flint glass and crown glass) with different focal powers so that the light emerging from the lens forms an image almost free from unwanted colors
随便看	Hockney hocks hockshop hockshops Hocktide hocs hocus hocus-pocus hocus-pocused hocus-pocusing hocus-pocussed hocus-pocussing hocused hocuses hocusing hocussed hocusses hocussing hod hod carrier hodad hodaddies hodads hodag hodden

英语词典包含469781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。