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
- Lanchester
- Lanchester equation
- Lanchester law
- Lancret
- Lancret equation
- Lancret theorem
- Lanczos
- Lanczos algorithm
- Lanczos approximation
- Lanczos (Arnoldi) process
- Lanczos method
- Lanczos process
- Lanczos sigma-factor
- Land
- land
- land acquisition
- land administration
- Land Administration Law of the People's Republic of China
- land air combined transportation
- land-air interaction process
- land-air thermal interaction
- Land Allocated to Government of the Sui and Tang Dynasties
- land allocation
- land and labor tax
- land-and-tax inspection in the Yanyou era