dichloromethaneWiktionary 原文英美构词拆解didi-前缀chlorochloro-前缀methanemethane词干di-Two. · Double, twice the quantity.chloro-green in color. · (organic chemistry) Containing chlorine.词源说明From di- + chloro- + methane.释义名词noun1(organic chemistry) The partially halogenated hydrocarbon CH2Cl2 widely used as a solvent同族词派生词 2dichloromethyl·DCM