“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	controlled atmosphere equipment controlled atmosphere heat treatment controlled atmosphere resistance furnace controlled atmosphere storage controlled blasting controlled burning controlled chemicals controlled circulation boiler start-up controlled cooling controlled current coulometry controlled-current coulometry controlled current electrogravimetric analysis controlled-current electrogravimetric analysis controlled current electrolysis controlled delivery controlled differential equation controlled diffusion process controlled drainage controlled drug release controlled ecological life support system controlled ecological life support system, CELSS controlled event controlled expansion alloys controlled experiment controlled grazing

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。