“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	dual program dual programming dual projection dual projective line dual projectivity dual proposition dual propositions dual purpose bamboo forest dual-purpose Cattle dual-purpose exploratory well dual-purpose shorthorn cattle dual quantifier dual-quaternion strap-down algorithm dual queueing system dual randomization dual-rate lunar position camera dual-rate moon camera dual referral dual regular polyhedron dual relation dual representation dual resonance dual resonance model dual-roll press formation dual root system

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。