理学 自动问答技术 释 knowledge extraction 知识抽取 把蕴含于信息源中的知识经过识别、理解、筛选、归纳等过程抽取出来，存储形成知识元库。
人工智能 知识工程 释文 knowledge extraction 知识提取
- characteristic ring
- characteristic root
- characteristics
- characteristics and evaiuation of industrial catalyst
- characteristics and patterns of urban spatial structure in China
- characteristic section of stage
- characteristic sensitivity
- characteristic sequence
- characteristic series
- characteristic set
- characteristic singularity
- characteristics method
- characteristics of chemical industry accidents
- characteristics of Chinese urban ethnic culture
- characteristics of cleanroom
- Characteristics of direction
- characteristics of forestry economy
- characteristics of hydrodynamics
- characteristics of low-light level night vision imaging device
- characteristics of mineral resources
- characteristics of plant community
- Characteristics of service operation management
- characteristics of shale gas
- characteristics of support system for aircraft materiel
- characteristics of textile design