ERO abbr. European Regional Organization of the International Confederation of Free Trade Unions 国际自由工会联合会欧洲地区组织; European Regional Organization of the International Dental Federation 国际牙科联合会欧洲地区组织; Division of Emergency Relief Operations 紧急救济工作司; emergency repair overseer 应急修理监视程序
ERTA abbr. Economic Recovery Tax Act 经济恢复税法案; Economic Recovery Tax Act of 1981 1981年经济复苏税收法案; Energy Research and Technology Administration 美国能源研究和技术管理局
ERTI abbr. electron ray tuning indicator 电子射线调谐指示器