文学 语义学 释 meta-language 元语言 用来描述或指称语言的语言或符号。又称纯理语言、符号语言。与对象语言（object language）相对。
metalanguage 元语言
＞数理逻辑与数学基础＞证明论＞释义 metalanguage 元语言 metalanguage 元语言†
系统软件 语言与编译 释文 meta language 元语言
- planar force system
- planar graph
- planar graph algorithm
- planar Hall effect
- planarity
- planarization
- planarization process
- planar junction
- planar lens
- planar limit
- planar linear magnetic grid ruler
- planar map
- planar motor
- planar near-field
- planar near-ring
- planar net
- planar parallel motion
- planar pinning center
- planar point
- planar polygon
- planar problem
- planar Schottky diode
- planar set
- planar square complex
- planar structural analysis of pharmaceuticals