“urban population structure”的概念、定义、翻译、参考文献-科学参考

单词	urban population structure
释义	urban population structure Encyclopedia 工学城市总体规划编制内容释 urban population structure城市人口结构一定时期内城市按照年龄、性别、职业、民族、教育程度等因素划分的各类人口的构成状况。
随便看	Road Traffic Safety Association of China Road Traffic Safety Association of the People's Republic of China road traffic safety early-warning road traffic safety enforcement road traffic safety information system road traffic safety preparedness road traffic safety publicity road traffic security road traffic sign road traffic signal controller road traffic signals road traffic system road transit online ticketing road transportation development road transportation employee road transportation for bulky cargo road transportation of dangerous goods road transportation of open pit road transportation operation permit road transportation safety road transport organization and management road transport volume roadworthiness certificate of motor vehicle roak Roald Amundsen

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。