“Cross-sectional study”的概念、定义、翻译、参考文献-科学参考

单词	Cross-sectional study
释义	Cross-sectional study Encyclopedia 医学流行病学研究的统计学设计释 Cross-sectional study横断面研究统计学设计用来估计目标人群在某一时刻感兴趣变量（数量）分布的研究。即在某一时刻对抽样样本的每个受试对象调查一组观察变量。
随便看	composite particle composite pattern composite pavement composite performance detection for vehicle composite phase change material composite photography Composite Pictures by Jingshan composite pile foundation composite plating composite polynomial composite portland cement composite probability composite process composite propellant composite proposition composite-pumped all-solid-state lasers，hybrid-pumped all-solid-state lasers composite quadrature formula composite reaction composite rectangle rule composite relation composite residue form composite resonator composite rod composite runs composite sample analysis

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。