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目的研究几类常见钥匙增配痕迹特征分布。方法用光学显微镜观察钥匙的增配痕迹。结果几类钥匙的增配痕迹能够观察到。结论通过检验不同种类钥匙上的痕迹特征可以确定是否为增配使用痕迹。
Objective To study the distribution of trace features of several common keys. Methods Using a light microscope to observe the additional traces of the key. The results of several types of keys with additional traces can be observed. Conclusion By examining the trace features on different types of keys, it is possible to determine if there are traces of additional use.