单词	planoconcave
释义	planoconcave /ˌpleɪnəʊˈkɒnkeɪv / adjective (Of a lens) with one surface plane and the opposite one concave.Plano-concave axicons are made of a plano surface in combination with a concave conical surface.... This tutorial explores lens action in plano-concave lenses when the object faces the flat side of the lens.
随便看	fitness fanatic fitness suite fitness test fitness training fit (or fill) the bill fit-out fit someone like a glove fit someone/thing in (or into) fit someone/thing out (or up) fit someone up fitted fitted sheet fitter fit the bill fitting fittingly fittingness fitting room fitting shop Fittipaldi, Emerson fit to be tied fit to bust fit-up Fitzgerald, Barry FitzGerald contraction

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。