请输入您要查询的字词:
单词
抚养系数
释义
抚养系数
Encyclopedia
医学
老年流行病学
释
dependency coefficient
抚养系数
人口中非劳动年龄人口数与劳动年龄人口数之比。又称抚养比、年龄抚养比、抚养率或负担系数。
随便看
presoak
presoaking
presolar grains
presolar matter
presolar nebula
presolar object
pre-sowing irrigation
pre-sowing seed treatment machine
presowing treatment of seed
presowing treatment of tree seed
presplitting
presplitting blasting
presplitting blasting of open pit
Presqu'île crater
PRESS
press
press allowance
Press and America: An Interpretive History of the Mass Media
Press and Publication Administration
Press and Publication Confidentiality System
Press and Publication Digital Resource Identifier, PPRI
Press Association,PA
pressboard
press censorship
press circles
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。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2025/11/25 15:01:41