“联合比估计”的概念、定义、翻译、参考文献-科学参考

单词	联合比估计
释义	联合比估计 Encyclopedia 理学数据收集模式释 combined ratio estimator联合比估计分层随机样本下，分别计算出目标变量与辅助变量的总体特征的分层估计量，然后用对应的分层估计量来构造比率估计所得的估计量。
随便看	formal spectrum formal stability formal stratigraphic unit formal sum formal synthesis formal system formal technical review formal theorem formal theory formal training formal transformation Formal Typology formal undecidable proposition formal universal deformation formal unsolvability formal vector field formal versal deformation formal wear formal work formamidase formamide form and arrangement of lines in calligraphy form and content Form and Fabric in Landscape Architecture form and matter

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。