数据库 数据库理论 释文 semi-structured model 半结构模型
- safety values
- safety valve
- safety valve adjustment
- safety valve of pressure vessel
- safety voltage
- safety water level
- safety water mark
- safe valve
- safflower
- safflower rust
- safflower seed oil
- Saffman force
- saffron
- Saffārid Dynasty
- Safi
- Safial-Din
- SAFIR
- SAFRAN S.A.
- safrole
- Safronov number
- Sa Fujun
- sag
- Saga
- Sagaing fault
- Saga-ken