数据库 数据库新技术 释文 inverse document frequency, IDF 反文档频率
- kill
- killed process
- killer
- killer bee
- killer cell
- Killer Clans
- killer whale
- Killian incision
- killifish
- Killing
- killing
- killing and wounding effects of nuclear weapon
- Killing differential equation
- Killing equation
- killing fluid
- Killing form
- killing homotopy group
- killing measure
- killing method
- killing people with toxin produced by poisonous parasites
- killing rate
- Killing's equation
- killing space
- killing transformation
- Killing vector