“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	productivity productivity-diversity relationship productivity hypothesis productivity measurement and evaluation system productivity of the arts product kernel product Kinetics product liability product liability insurance product library product life cycle product lifecycle assessment product life-cycle management product lifecycle management product lifecycle management, PLM product lifecycle management，PLM product life cycle theory product limit estimator product-limit estimator product line architecture Product line optimization Product Line Pricing product log function product management product manifold

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。