“left-behind elderly”的概念、定义、翻译、参考文献-科学参考

单词	left-behind elderly
释义	left-behind elderly Encyclopedia 法学老年社会问题释 left-behind elderly留守老人因子女离开而留在原家庭中的老年人。根据中国对人口迁移流动的定义，严格意义上的留守老人指因子女离开（跨越县级以上行政区）半年及以上而留守在家的老年人。
随便看	identification and localization technology of engineering site identification basis of crude drug identification capacity identification chart identification document photography identification for efficient utiliztion of nutrients in crop plants identification friend or foe electronic warfare identification loss identification mapping identification method of quarantine pests identification method of sample retained records identification number of electronic records identification of abiotic stress resistance identification of acetylene cylinder identification of agronomic trait identification of a model identification of botanical characteristics identification of boundaries identification of Chinese crude medicinals identification of Chinese crude medicinals by DNA barcoding identification of Chinese materia medica identification of Chinese medicinal characteristics identification of Chinese medicinal origin identification of Chinese medicinals identification of Chinese medicinals by microscope

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。