文学 页面描述语言 释 page description language；PDL 页面描述语言 对页面内的各种信息元素的属性、特征、行为以及页面元素之间的相互关系进行描述的计算机语言。
系统软件 语言与编译 释文 program design language, PDL 设计程序语言
- 4-color photometry
- 4-color problem
- 4-colour process printing
- 4Cs of psychological control
- 4C星表
- 4D gravity survey
- 4 dimensional covariant
- 4-dimensional covariant
- 4 dimensional form of Lorenz transformation
- 4-dimensional form of Lorenz transformation
- 4-dimensional geometry
- 4-dimensional manifold
- 4 dimensional n order tensor
- 4 dimensional n-order tensor
- 4-dimensional n-order tensor
- 4 dimensional second order tensor
- 4 dimensional second-order tensor
- 4-dimensional second-order tensor
- 4-dimensional universe
- 4D navigation
- 4D seismic data processing
- 4 force vector
- 4-force vector
- 4G
- 4GL