信息安全 信息系统安全防护技术 释文 security filter 安全过滤器
- primary endosperm cell
- primary endosperm nucleus
- primary energy
- primary environment
- primary environment; original environment
- primary etching
- primary explosive
- primary extension
- primary extraction
- primary factor
- primary feed
- primaryfermentation
- primary field
- primary [fission] fragment
- primary fission fragment
- primary fission product
- primary fissure
- primary flaw
- primary focal point
- primary follicle
- primary fossil
- primary fragment
- primary frequency standard
- primary gas thermometry
- primary glass making