“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	natural vegetation natural ventilation natural ventilation of swine building natural vibration natural water natural water cycle system natural water quality natural weighting natural wetland natural wetland microbes Natural White Desert Protected Area natural width natural width of gamma ray spectrum natural width of spectral line natural width of γ-ray spectrum Natural will natural X-ray background natural year natural zeolite material natural γ-ray background natural γ-ray logger Nature nature Nature and Destiny, theory of nature and form

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。