“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	series solution series spectrum series statement series system series term series terminated line series termination series turbocharging system series ventilation series voltage stabilizing circuit series with gaps series with positive terms series word serimeter serin serine serine protease inhibitor seriography serioparallel serioscopy Serious adverse event serious game serious illness assistance Serious illness insurance system for urban and rural residents serious injury

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。