“age composition”概念、定义、翻译-科学时代

单词	age composition
释义	人口学词汇手册 age composition 年龄结构，年龄构成
随便看	aphanizophyll aphanizophyll aphanocrystalline texture aphanolejeunea Aphanomyces aphanophyre aphanopleura aphasia aphasia aphasia aphasia aphasic sore throat aphasis and paralysis of limbs Aphebian group aphelandra aphelic conjunction aphelic distance aphelic opposition aphelion aphelion aphelion aphelion aphelion aphelion apheliotropism

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。