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

单词	demographic factor
释义	demographic factor Encyclopedia 哲学社会物质生活条件释 demographic factor人口因素作为社会存在和发展的条件之一，人口是指处于一定历史发展阶段上的、由一定数量构成的有生命的个人的总和。人口因素具体包括人口的数量、质量、构成、分布及其变动情况等。
随便看	effective f-number effective focal length effective focal spot effective focus length effective formal deformation Effective Formulae Handed Down for Generations effective frequency range effective fuel consumption effective functional effective genus effective group effective group action effective Hamiltonian effective height effective history effective hydrocarbon source area effective indenter effective interaction effective ionic radiu effective ion Larmor radius effective Lagrangian of non Abelian gauge theory effective Lagrangian of non-Abelian gauge theory effective Lande g factor effective length effective length of capillary

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。