“spiral sampling design”的概念、定义、翻译、参考文献-科学参考

单词	spiral sampling design
释义	spiral sampling design Encyclopedia 理学【基本概念】释 spiral sampling design螺旋式矩阵抽样将施测目标中的项目螺旋循环往复式指派给群体内的个体的抽样方法。
随便看	characteristic class of a manifold characteristic cohomology class characteristic commercial street(district) characteristic concentration characteristic condition characteristic cone characteristic congruence characteristic conoid characteristic constant characteristic coordinate Characteristic Cultural Industries characteristic curve characteristic cycle characteristic database characteristic derivative characteristic determinant characteristic differential equation characteristic differentiation characteristic direction characteristic dyadic characteristic (eigen) value of a matrix characteristic element characteristic energy loss spectrum characteristic envelope characteristic equation

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