“Quota Sampling”的概念、定义、翻译、参考文献-科学参考

单词	Quota Sampling
释义	Quota Sampling Encyclopedia 理学【核心概念】释 Quota Sampling配额抽样调查人员将调查总体按一定标志分类或分层，确定各类（层）单位的样本数额，在配额内任意抽选样本单元的抽样方法。又称定额抽样。
随便看	full-floating mandrel mill full-flow staged combustion liquid rocket engine full form full form sculpture full-frame CCD full frame digital camera full functor full grain leather full group full group of automorphisms Full History of Great Vietnam full homomorphism full hybrid electric full-hydraulic power control system full image full imbedding full implicit method fulling full inhomogeneous Lorentz group full invariance full invariant series full invariant subgroup full inverse image full isotropic full isotropic plane

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。