物质分离分析
Substances isolation and analysis
分层角色访问控制
the role-layering access control model
角质层
periostracum
corneous layer
stratum corneum
Laminated layer
corneum
cuticle
Cornified layer
corncum
horny layer
cuticular layer
cuticle layer
cuticular membrane
horny layer， stratum corneum
cuticula
Cuticles
角质层的水化作用
Hydration of stratum corneum