劍橋詞典any one of a group of chemical substances which all have the same number and type of atoms but in which the arrangement of the atoms is slightly different between each substance （同分）異構(gòu)體 structural /geometrical /optical isomers 結(jié)構(gòu)／幾何／光學(xué)同分異構(gòu)體 返回 isomer