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
- learning space
- learning strategy
- learning style
- learning support services system
- learning system
- learning task
- learning theory
- learning theory of social constructivism
- Learning: The Treasure Within
- Learning: the Treasure Within
- Learning to Be: The World of Education Today and Tomorrow
- Learning to Labor: How Working Class Kids Get Working Class Jobs
- learning to rank
- learning vector quantization
- learning vector quantization neural network
- learning with a teacher
- learning without a teacher
- learning with technology
- Lease Cancelling
- leased asset
- leased asset maintenance
- lease expense
- lease farm
- lease holding farm household
- lease of land-use right