理学 数据库系统设计 释 functional dependency 函数依赖 数据库中一个关系中两组属性之间的约束。
数据库 数据库理论 释文 functional dependence, FD 函数依赖
- magnetic diffusion
- magnetic diffusion coefficient
- magnetic diffusivity
- magnetic dip
- magnetic dipolar interaction
- magnetic dipole
- magnetic dipole layer
- magnetic dipole moment
- magnetic dipole radiation
- magnetic dipole transition
- magnetic dip pole
- magnetic discharge welding
- magnetic disk
- magnetic disk adapter
- magnetic disk drive
- magnetic disk storage
- magnetic disorder
- magnetic disturbance
- magnetic diurnal variation
- magnetic diurnal variation observation
- magnetic domain
- magnetic dot
- magnetic drum
- magnetic drum store
- magnetic dynamo