“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	The Present Situation and Our Tasks the preservation and conservation (IFLA-PAC) and the IFLA strategic programme on preservation and conservation the preservation of Amsterdam historic city the preservation of Athens historic city the preservation of Bamberg historic city the preservation of Bangalore historic city the preservation of Bath historic city the preservation of Berlin historic city the preservation of Bordeaux historic city the preservation of Brussels historic city the preservation of Cairo historic city the preservation of Cesky Krumlov the preservation of Chicago historic city the preservation of City of Valletta the preservation of Esfahan historic city the preservation of Florence historic city the preservation of Hanoi historic city the preservation of Istanbul historic city the preservation of Kathmandu historic city the preservation of Kyoto historic city the preservation of Leuven historic city the preservation of Lima historic city the preservation of Lyon historic city the preservation of Malacca historic city the preservation of Memphis and its Necropolis

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。