“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	ruled surface directrix ruled-surface map ruled surface of rotation rule for infrastructure and resources planning to soliciting opinions of soil and water conservation rule learning rule of 72 rule of administrative law rule of assignment Rule of Ci Poetry rule of commutativity rule of commutativity of equivalence rule of compound transposition rule of conflict rule of corroborative evidence rule of derivation rule of detachment rule of disjunction rule of electroneutrality rule of elimination rule of equal amount of substance rule of equality rule of erecting beam rule of erecting column rule of exportation rule of false position

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。