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veterinary epidemiology cohortstudy
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veterinary epidemiology cohortstudy
Encyclopedia
农学
兽医流行病学队列研究
释
veterinary epidemiology cohortstudy
兽医流行病学队列研究
将一个范围明确的动物群体或组群,按是否暴露于某种可疑因素及其暴露程度分为不同亚组,追踪各自的结局,比较不同亚组之间结局差异,从而判定暴露与结局之间有无因果关系及关联程度大小的观察性研究方法。
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=heated lithium ion system 受热锂离子系统
heated printhead of fused deposition modeling
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