“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	aluminum diethyl monochloride aluminum dust explosion Aluminum emission line in the Galactic plane aluminum foams aluminum foil aluminum galium arsenide aluminum gallium indium phosphide aluminum gallium nitride aluminum hydride aluminum indium arsenide aluminum indium phosphide aluminum iodide aluminum isopropoxide aluminum manganese ferroalloy aluminum matrix composite aluminum matrix composites aluminum nitride aluminum ore resource aluminum oxide aluminum oxide; bauxite aluminum-plastic composite panel aluminum pneumoconiosis aluminum-rich star aluminum rod continuous casting and rolling aluminum silicate glass

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。