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

单词	elderly population
释义	elderly population Encyclopedia 法学老年型人口释 elderly population老年型人口 0～14岁人口数量占总人口数量30%以下，65岁及以上人口数量高于总人口数量7%的人口年龄结构。
随便看	coarse-graining coarse graining method coarse-group coarse hair coarse hair rate coarse intelligence coarse mode coarse moduli scheme coarse moduli space coarse motion coarse mottle coarse needle weft-knitted fabric coarseness coarsening coarse ore bin coarse particle coarse particle flotation coarse particle mode coarse porous/hollow concrete coarse pulverized coal separator coarser covering coarser partition coarser relation coarser structure coarser topology

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。