“field trial”的概念、定义、翻译、参考文献-科学参考

单词	field trial
释义	field trial Encyclopedia 医学现场试验释 field trial现场试验在社区的现场条件下，以尚未患某病的人作为研究对象，按随机分配原则将研究对象分为实验组和对照组，实验组给予某种干预措施（研究因素），对照组不给予干预措施或给予安慰剂，比较两组结局的方法。又称人群预防试验。
随便看	CHaracterizing ExOPlanet Satellite character lemma Character Makeup of Peking Opera character model character modeling character modeling design character module character of a group character of an Abelian group character of an algebra character of an algebraic group character of a regular chain character of a representation character of a representation of a group character of a semigroup character of a topological group character of a topological space character of a unitary representation character of discontinuity character of isotropy character of symmetric operation character-oriented protocol character person switching character printer characterpulse

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