“分别比估计”的概念、定义、翻译、参考文献-科学参考

单词	分别比估计
释义	分别比估计 Encyclopedia 理学数据收集模式释 separate ratio estimator分别比估计分层随机样本下，对每层样本分别运用比率估计量，然后对各层的比率估计量进行加权平均得到的估计量。
随便看	underdetermined underdetermined linear system underdetermined system underdetermined system of equations underdevelopment underdoped regime underdoping underdot underestimate algorithm underexposure underfitting underfloor air distribution underflow underflow tube under fly underfocus under-forest economy under fur underglaze blue underglaze dark blue glaze underglaze dark blue glazed underglaze decoration underglaze red undergoing professional training at an old-type opera school undergraduate education

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。