数据库 数据库理论 释文 external schema 外模式
- proper natural number
- proper nilpotent element
- proper node
- proper non-inferior solution
- proper nonvoid subset
- proper number
- proper open covering
- proper order dictionary
- proper orthochronous Lorentz group
- proper orthogonal group
- proper orthogonal mapping
- proper orthogonal matrix
- proper orthogonal transformation
- proper pair
- proper pairing
- proper part
- proper plane
- proper point
- proper point of inflection
- proper polarization
- proper polynomial
- proper prefix
- proper principal minor
- proper product
- proper property