数据库 数据库应用开发 释文 database logical structure design 数据库逻辑结构设计
- piston rod packing
- piston seals
- piston stroke
- piston stroke-bore ratio
- piston type formation
- pistosaurs
- P.I.Stuchka
- pi-system
- pit
- pitahaya
- pit and adit engineering
- pit and fissure sealant
- pitaya
- pitaya stem rot
- pit bottom
- Pitcairn Islands
- pit canal
- pit cavity
- pit cell
- pitch
- pitch accent
- pitch and curvature of roof
- pitch angle
- pitch-angle distribution
- pitch angle of aircraft