“child aged ratio”的概念、定义、翻译、参考文献-科学参考

单词	child aged ratio
释义	child aged ratio Encyclopedia 法学年龄释 child aged ratio老少比总人口中老年人口数与少儿人口数之比。一般以百分数表示。
随便看	algebraic sheaf algebraic sign algebraic simplification algebraic singularity algebraic singular point algebraic solution algebraic space algebraic specification algebraic spiral algebraic spline curve algebraic spline surface algebraic stability criterion algebraic structure algebraic subgroup algebraic sum algebraic supervariety algebraic surface algebraic surface of general type algebraic surface of order one algebraic surface of order two algebraic symbol algebraic system algebraic tangle algebraic tensor product algebraic theorem

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。