pmdapyromellitic anhydride均: equal; even四: four酸酐: acid anhydride; estolide苯均四酸: pyromellitic acid苯均四酸二亚酰胺: pyromellitic diimide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:苯均四酸酐，即可在微信中查询翻译
