数据库 数据库理论 释文 fourth normal form, 4NF 第四范式
- life testing
- life time
- lifetime
- lifetime dilation
- lifetime fertility rate
- lifetime measurement of high-energy particles
- lifetime of carrier
- lifetime of carriers
- lifetime ofcarriers
- lifetime of nonequilibrium carrier
- lifetime of nonequilibrium minority carrier
- lifetime of system
- Life traffic
- Life weekly
- life-world
- life zone
- Life–Work Balance
- LIFFE
- LIFO
- Lifshitz
- lift
- lift accident
- lift angle
- lift augmentation
- lift coefficient