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
- ion rocket
- ion saturation current
- ion scattering spectroscopy
- ion scattering spectroscopy (ISS)
- ion scattering spectroscopy, ISS
- ions condensation
- ion selective electrode
- ion-selective electrode
- ion selective field effect transistor
- ion-selective field-effect transistor
- ion sensor
- ions forming crystal structure
- ion sheath
- ion-sound instability
- ion-sound solitary wave
- ion sound speed
- ion-sound speed
- ion-sound turbulence
- ion sound wave
- ion-sound wave
- ion source
- ion spot
- ion sputtering equipment
- ion suppressed chromatography
- ion tail