trans isomer反: reverse side顺反异构体: cis and trans isomer; cis trans isomer; cis-trans isomers; cistransisomer异构体: eufomer; isomeride反异构型: ante isoconfiguration顺反异构: cis trans isomerism; cis-trans isomerism; syn-anti isomerism下载手机词典可随时随地查词查翻译