xy.li.dinen.(名词)Any of six toxic isomers, (CH3) 2C 'H 3NH 2, derived from xylene, used chiefly as dye intermediates. 二甲基苯胺:六种有毒的同分异构体中的一种(CH3) 2C 'H 3NH 2,由二甲苯制得,主要用于染料中间物 Any of various mixtures of xylidine isomers.一种二甲基苯胺同分异构体的混合物