方法用铝板制作相同坡长不同齿坡角的钥匙模型，在相同夹持方式下模拟增配过程，观察并总结钥匙上仿形刀痕迹倾斜角度的变化。
Methods Similated to duplicate model keys in sameness nipping manner, then observe and summarize the slope angel of profile modeling reamer trace how to change.
这两件半成品玉残件保留了加工制作的痕迹，为研究古蜀玉器制作工艺提供了重要的实物材料。
The fragments left many marks of being manufactured in the body, which provides substantial materials of great significance for the study of manufacturing technique of ancient Shu Jade ware.
去看一块天然染色的地毯，从一行接一行的毛纱结里，能看到它自己被制作的痕迹。
Go to see a natural carpet dyed, while connecting one lines of wool yarn from the delegation and forming, can see the trace that it itself is made.
结论通过了解羊角锤的结构特点和功能，综合分析撬压时形成痕迹的作用关系，按照现场环境条件制作样本，可以进行同一认定。
Results striation marks are unique to the particular claw-hammer which made the mark. Conclusion claw-hammer striation marks can be used for claw-hammer identification.
方法制作内凹齿钥匙正常开锁和被钥匙机复制后的样本，用光学显微镜拍照固定痕迹特征。
Method Samples of manipulated keys and keys that used as guide in a duplication process are made. Marks and striations on the keys are photographed and analyzed by light microscopy.
方法制作内凹齿钥匙正常开锁和被钥匙机复制后的样本，用光学显微镜拍照固定痕迹特征。
Method Samples of manipulated keys and keys that used as guide in a duplication process are made. Marks and striations on the keys are photographed and analyzed by light microscopy.
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