“Population Mechanical Change”的概念、定义、翻译、参考文献-科学参考

单词	Population Mechanical Change
释义	Population Mechanical Change Encyclopedia 法学人口机械变动释 Population Mechanical Change人口机械变动一定地域范围内，由人口迁移而引起的人口变化。
随便看	fractional statistics fractional step fractional step method fractional theta-characteristic fractional unit fractional vertex fractional viscoelastic fluids fractiona of the year fractionary fractionary dimension fractionary ideal fractionate fractionation fractionation curve fractionation effect fractionation factor fraction bar fraction calculate method fraction collector fraction expression fraction field fraction in lowest terms fraction of critical speed for grinding mill fraction of integers fraction of soil heavy metal

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。