数据库 数据库管理系统及其实现技术 释文 object deputy database 对象代理数据库
- vacuum degree in canned food
- vacuum dehydration
- vacuum deposition
- vacuum diagram
- vacuum diffusion welding
- vacuum discharging test method
- vacuum distillation
- vacuum distillation refining of rare earth
- vacuum drum dryer
- vacuum dry friction cold welding test
- vacuum electron beam remelting
- vacuum electron beam welding
- vacuum electronic device
- vacuum electronics
- vacuum encapsulation
- vacuum energy
- vacuum etallurgy
- vacuum etching
- vacuum evaporation
- vacuum evaporation technique
- vacuum evaporator
- vacuum expectation value
- vacuum-extraction of the fetus head for midwifery
- vacuum field
- vacuum filter