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
- Universal Availability of Publications Core Activity
- universal background
- universal behavior
- Universal Bibliographic Control
- Universal Bibliographic Control and International MARC
- universal bound
- universal buffer solution
- universal bundle
- universal calibration
- universal Cantor curve
- universal category
- universal cellular automaton
- universal chain ring
- universal Chern class
- universal Chevalley group
- Universal Circulating Herald
- universal class
- universal class of singularities
- universal class of structures
- universal closure
- universal code
- universal coding
- universal coefficient
- universal coefficient formula
- universal coefficient theorem