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xian chang kan yan jie duan wu zheng wu ran de fang kong
Author(s): 
Pages: 461-461,464
Year: Issue:  6
Journal: Journal of Forensic Medicine

Abstract:  物证污染是指在犯罪发生后,物证材料在外界因素作用下发生了能够影响物证鉴定结果的性质变化.根据物证污染的阶段可以分为犯罪现场的物证污染和实验室的物证污染,根据物证污染的来源可以分为人的污染、物证之间的相互污染和其他物质的污染,根据物证污染的形态可以分为有形物质污染和无形物质污染,根据污染物的种类可以分为生
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