理学 文本挖掘评测 释 Topic Detection and Tracking; TDT 话题检测与跟踪会议 由美国国防高级研究计划委员会（DARPA）主办的一个关于信息抽取的会议。又名TDT。
TDT 全称：Terrestrial Dynamical Time。地球力学时
数据库 数据库新技术 释文 topic detection and tracking, TDT 主题检测与跟踪 人工智能 计算语言学 释文 tonic detection and tracking, TDT 话题检测与跟踪
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- central Asian salamander
- central Asian tortoise
- Central Asian Uprising
- Central Asia under rule of Seleucid Kingdom
- Central Asia under the Rule of Persian Empir
- central associative algebra
- central atom
- central automorphism
- Central Avenue, Harbin, China
- central axis
- central axis of inertia
- central axonometry
- central bank bill
- central bank independence
- central bank law
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- Central Bank of Honduras
- Central Bank of Nicaragua
- Central Bank of Paraguay
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