AO

AO Arctic Ocean 北极海, 北冰洋

AO Access Opening 检修孔, 人孔

AO Audit Office 进款检查室

AO Angola 安哥拉

AO Anti-Oxidant 抗氧化剂，硬化防止剂

AO Adults Only (WIN)只允许成年人

AO Atlantic Ocean 大西洋

AO Analog Output 模拟输出

AO Applied Optics 应用光学

AO Among Others 除了别的以外,其中

AO Acridine Orange 吖啶橙

AO Access Ordering (WIN)访问顺序

AO Automated Office 自动化办公室

AO Accommodation Officer [英](学校)宿舍管理员

AO Attendees Only 与会者仅

AO acid output 酸排出量

AO abdominal aorta 腹主动脉

AO Application Objects 应用对象

AO And Others 以及其他等等

AO absortion ointment 吸水软膏剂