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

单词	age structure of population
释义	age structure of population Encyclopedia 理学种群年龄结构释 age structure of population种群年龄结构种群中各年龄阶段的个体在种群中所占的比例。又称种群年龄分布、种群年龄组成。
随便看	urbanrail station building Urban Rail Transit urban rail transit urban rail transit bridge urban rail transit combined sewerage system urban rail transit construction urban rail transit construction planning urban rail transit drainage system urban rail transit electromechanical device urban rail transit engineering urban rail transit facilities urban rail transit feasibility study urban rail transit gauge urban rail transit network planning urban rail transit operation and maintenance Urban rail transit platform urban rail transit regulatory planning Urban Rail Transit Sidings（auxiliary lines） urban rail transit signal urban rail transit station urban rail transit subgrade construction urban rail transit turnout urban rail transit vehicle urban rail water supply and drainage system urban rail water supply for fire protection and extinguish fire

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。