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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。
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stratum of a stratification
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stratum vasculare
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stratus
stratus cloud
Stravinsky,Igor Fyodorovich
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straw based feedstuff
straw based fertilizer
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straw-based panel
strawberry
Strawberry and Chocolate
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strawberry fruit rot
strawberry genus
strawberry gray mould
strawberry groundcherry
strawberry powdery mildew
strawberry red stele root rot
strawberry thrips
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straw briquetting
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