...he Investigation of Regulatory Factors 伞兵事故性伤害流行病学调查与着陆训练负荷肌电研究Epidemiological Investigation of 镉致骨毒效应及预后Bone Toxic Effect and Its Prognosis Caused by Cadmium ..
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Objective Based on the report of epidemiological investigation of oral Realth in Guandong in 1995.
目的调查分析广东省青少年第一恒磨牙患龋情况，为防治对策提供依据。
An epidemiological investigation of the case was unable to uncover a history of exposure to dead or diseased birds.
对病例的流行病学调查未发现死禽或病禽接触史。
An epidemiological investigation of human and domestic animal trichinosis was carried out in Xuchang and Yanling of Xuchang City, Henan Province in 1996-1997.
年，分别在河南省许昌市的许昌县及鄢陵县进行人群及动物旋毛虫病流行病学调查。
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