“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	elliptic hypergeometric series elliptic image ellipticine elliptic integral elliptic integral of the first kind elliptic integral of the second kind elliptic integral of the third kind elliptic integral singular value elliptic invariant elliptic inverse point elliptic inversion elliptic involution elliptic irrational function elliptic isometric transformation ellipticity ellipticity condition ellipticity constant ellipticity effect elliptic lambda-function elliptic line ellipticLog elliptic logarithm elliptic metric geometry elliptic modular form elliptic modular function

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。