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历史性队列研究
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历史性队列研究
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医学
历史性队列研究
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historical cohort study
历史性队列研究
研究开始时,待研究的结局已出现,根据研究者已掌握的在过去某时点(时期)进入队列时是否有暴露(如是否吸烟)或研究时间段内暴露的多少(如从进入队列到发病前累计的吸烟量)等相关资料进行研究对象分组的研究。又称回顾性队列研究、非即时性队列研究。
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underwater blasting
underwater blasting surge
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under-water camera
underwater camera monitoring
underwater cathodic protection
under-water cinematography
underwater communication
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underwater contactless connection
underwater control system
underwater cutting
underwater electric distribution system
underwater energy-saving management technology
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underwater fiber lighting
underwater fluorescence detection
underwater foundation bed dumping fill survey
underwater foundation bed leveling survey
underwater foundation trench construction survey
underwater foundation trench excavation measure
underwater gamma-ray survey
underwater gas separator
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