“old dependency ratio”的概念、定义、翻译、参考文献-科学参考

单词	old dependency ratio
释义	old dependency ratio Encyclopedia 法学年龄释 old dependency ratio老年抚养比人口中老年人数与劳动年龄人数之比，以百分数表示。又称老年抚养系数。
随便看	Cape Coast Castle Museum Cape Colored Cape Floral Region Protected Areas cape gooseberry cape hare，desert hare Cape Horn cape jasmine cape jasmine fruit Cape Le Grand National Park Capella Capelli Cape Mountains Cape No.7 Cape of Good Hope Nature Conserve Cape Photographic Atlas Cape Photographic Catalogue Cape Photographic Durchmusterung Cape photometry Cape Reinga caper euphorbia seed Cape RI photometry Cape St Vincent Cape Times Cape Town Cape Town National Botanical Garden of South Africa

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。