理学 国际空间数据处理大会 释 International Symposium on Spatial Data Handling; SDH 国际空间数据处理大会 国际地理联合会地理信息科学委员会发起的国际会议系列，是地理信息科学领域最早和最有代表性的国际会议之一。
网络与数据通信 协议体系与组成结构 释文 synchronous digital hierarchy, SDH 同步数字体系
- OH谱线
- OI
- Oiapoque River
- OICETS
- oidiophore
- oidium
- OIE Animal Health Code
- OIE Manual of Diagnostic Tests and Vaccines for Terrestrial/Aquatic Animals
- OIFITS
- oil absorbent polymer
- oil-absorbing polymer
- oil absorption process
- oil absorption separation of pyrolysis gas
- oil and gas accumulation zone
- oil and gas burner
- oil and gas dispersion
- oil and gas driving mechanisms
- oil and gas extraction wastewater
- oil and gas flow up speed
- oil and gas fluorescence indication
- oil and gas ground safety test
- oil and gas heat exchange equipment
- oil and gas pipeline baseline assessment
- oil and gas pipeline integrity audit
- oil and gas pipeline leakage accident