“目标式抽样”的概念、定义、翻译、参考文献-科学参考

单词	目标式抽样
释义	目标式抽样 Encyclopedia 理学【基本概念】释 purposive of judgmental sampling目标式抽样研究人员在初步了解调查对象某些信息的基础上，依靠自己的判断，选择能够为研究问题提供最大信息量的研究对象的一种非概率抽样。又称目的抽样、立意抽样、专家抽样。
随便看	plane-concave lens plane configuration plane control survey plane-convex lens plane coordinate plane coordinates plane cubic plane curve plane curve location plane cutting plane dihedral angle planed immunization plane division by circles plane division by ellipses plane division by lines plane domain plane electromagnetic wave plane except one point plane field plane field of lines plane figure plane-filling curve plane-filling function plane geodetic control network plane geometry

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。