工学 地理标记语言 释 geographic markup language; GML 地理标记语言 基于可扩展标记语言（XML）的地理信息编码语法规则。
数据库 特种数据库 释文 geographic markup language, GML 地理标记语言
- undecimal number system
- undecimal system
- undecomposable
- undefinability
- undefined
- undefined concept
- undefined symbol
- undefined technical term
- undefined term
- undeflected
- undeformed
- undegraded
- undegraded neutron
- undelayed neutron
- undemonstrable
- Undeniable Signature
- undepleted flux
- underactuated control
- underactuated mechanism
- underageing
- underage opera performer
- under annealing
- underbalance
- underbalanced accurate pressure control drilling
- under balanced perforation