法学 美国人类学学会 释 American Anthropological Association; AAA 美国人类学学会 美国人类学家学术团体。 历史学 美国历史 释 Agricultural Adjustment Administration；AAA 农业调整局 罗斯福新政时期主要的改革机构。美国政府根据1933年《农业调整法》建立的政府机构，隶属于农业部。
AAA 全称：Astronomy and Astrophysics Abstracts。天文学和天体物理学文摘
网络与数据通信 网络管理与安全 释文 authentication authorization and accounting, AAA 身份认证、授权和记账协议
- the second generation mobile communication technology
- the second grade water function zone
- The Second Historical Archives of China
- The second Institute of China Civil Aviation Administration
- the second kind gauge transformation
- the second kind superlattices
- the second law of photochemistry
- The Second Media Age
- the second national land survey
- The Second National Literature and Arts Congress
- The Second Oil Crisis
- the second-price sealed auction
- The Second Session of the Eighth National Congress of Communist Party of China
- The Second Spring
- The Seconds Secret/Fung gip
- the Second Sun
- The second territorial spatial planning of the Netherlands
- the Second United States Bank
- the second urination
- The Second Viennese School
- the second virial coefficient
- The Second Volume of Stories in the West Lake
- The Secret History of the Mongols
- The Secret Life of Saeed the Pessoptimist
- The Secret of Kells