理学 系统设计 释 design specification 设计规约 对软件或其组成成分（模块）的内部结构、模块能力及其相关约束的描述，需要满足系统需求规约所指定的全部功能及非功能要求。
软件工程 释文 design specification 设计规约
- placoid scale
- PLA composite materials
- PLA Drama
- plage
- plage area
- plage corridor
- plage flare
- PLA General Political Department Song and Dance Ensemble
- plage radiation
- plages
- plagiarism
- plagiarism detection
- plagioclase
- plagioclase granite
- plagiogyria fern family
- plagiogyria ferns
- plagiohedral
- plagiotropic
- plagiotropism
- plague
- plagula
- plaid square
- plain
- plainback dobby design weave
- plain clappers