“demographic transition theory”的概念、定义、翻译、参考文献-科学参考

单词	demographic transition theory
释义	demographic transition theory Encyclopedia 经济学〔人口和劳动〕释 demographic transition theory人口转变理论以人口生育率与死亡率的历史资料为依据，解释人口规模和结构随时间推移而变化的理论。
随便看	root of an equation root of a number root of a polynomial root of a root system root of a tree root of common baphicacanthus root of lung root of trust root of unit root of unity root order root organic acids root-oriented dictionary root phenolics root pile root point root pressure root pruning root quantitative analysis root reduction and oxidation ability root restriction Roots Roots and Branches roots blower root search movie

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。