单词	acaroid
释义	acaroid /ˈakərɔɪd / (also acaroid resin) noun [mass noun] A resin obtained in Australia from some kinds of grass tree, used in making varnish.In this second composition, the acaroid resin is included as a burning rate modifier and the potassium nitrate to improve the effect of the resin.... The solution of the acaroid resin is yellow and yields with lead acetate a precipitate, while the solutions of the other two resins are red, that of X. quadrangulare being not disturbed by acetate of lead, while that of X. arborea produces with the same reagent a turbidity; the chloroformic solution of the latter is yellow, that of the former colorless. Origin Mid 19th century: of unknown origin.
随便看	pro-rector pro re nata prorex prorogate prorogation tauromachian tauromachic tauromachy Taurus Taurus Mountains tau staff taut tauted tautegorical tautegorically tautegory tauten tautie tautit tautliner tautly tautness tauto- tautochrone tautochronism

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。