diacid二: two酸: acid丙二酸: diethyl malonate; malonic acid; methane dicarboxylic acid; propandioic acid; propane diacid草二酸: oxalosuccinic acid丁二酸: (琥珀酸) succinic acid; butanedioic acid下载手机词典可随时随地查词查翻译