信息安全 信息系统安全防护技术 释文 structured protection 结构化保护
- falling sphere method
- falling star
- falling systems tract
- falling tail
- falling temperature method
- fall-into
- fall line
- fall meteorite/observed fall
- fall-off
- Fall of Japan
- fall-of-potential
- fall of the sea
- Fallopian tube
- fallopian tubes anomalies
- falloposcopy
- fall-out
- fallout rate
- fallow deer
- fallow land
- fall-plate stitch
- fall risk assessment
- falls
- fall scale
- falls in the elderly
- falls prevention