数据库 数据库管理系统及其实现技术 释文 entity integrity 实体完整性
- X\γ CT(computed tomography) radiography equipment
- x\γ ray transmission imaging examination equipment
- X\γ射线CT检查设备
- X\γ射线背散射成像检查设备
- X\γ射线透射成像检查设备
- XaaS
- XAE
- XAFS
- Xaitongmoin Xian
- X-alloy
- Xaloy
- X alpha method
- X alpha方法
- Xamidimura
- XANADU
- Xanadu
- Xanadu of the Qing Dynasty
- XANES
- xanthacin
- xanthan gum
- xanthate
- xanthate ester
- xanthate gum
- xanthate; xanthonate
- xanthator