Isoir伊苏瓦尔ISOabbr.国际标准化组织(=International Standards Organization)isobutyl indole异丁基吲哚isobutylcyanide异戊腈Iso - butanol异辛醇isospin current同位旋流isoracemizationn.等消旋isotopic purity同位素纯度isoamyl alcohol异戊醇isocapronitrile异己腈,异戊基氰isopropylmalate异丙基苹果酸isodensitometer等密度计