磨损;
In the other hand, the wear of tool was analyzed. The relative volume attrition rate of tool in the initial wear stage and normal wear stage was achieved and then the empirical formula was launched to calculate the axial wear of tools.
然后分析了刀具磨损规律,得到了刀具在初期磨损阶段和正常磨损阶段的相对体积损耗率,并推出了计算刀具轴向损耗量的经验公式。
Objective: To investigate the rules and trends of tooth attrition by studying the tooth wear of population in Neolithic Age from banpo museum.
目的:调查六千年前新石器时期古人牙齿的磨耗状况,以探寻牙齿磨耗的规律及其演化发展趋势。
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