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field trial
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field trial
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医学
现场试验
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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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gate array
Gateaux
Gateaux derivative
Gateaux differentiable
Gateaux differentiable operator
gateball
gate control theory
gate current
gated
gated-beam tube
gated clock
gated decoupling
gate delay
gated injection
gated noise
gated noise source
gated power
gated transport
gate electrode
gate function
gatekeeper
Gatekeeper Theory
gatekeeper theory
gate-last process
gate level measuring instrument
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