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.
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