formal validation and verification
formal culture [= formal discipline]
both spiritual and formal resemblance iconicity
algebraic formal pattern recognition
alternate return formal
arithmetization of formal system
array formal specification
automata and formal language
average years for formal education
Black Robes Worn By Courtiers on Formal Occasions
城市固体废物
生活垃圾
城市生活垃圾
垃圾
废弃物
城市固体垃圾
城市固体废弃物
缁衣
Computer Formal discription