polyhalogenation多: many; much; more卤化: halogenate多卤化苯: benzene polyhalide多卤化的: polyhalogenated多卤化反应: polyhalogenation下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:多卤化,即可在微信中查询翻译