骨头上切割痕迹的详细分析显示，它们与食肉动物留下的牙齿痕迹与爪痕存在本质的区别。
Detailed analysis of the cut marks on the bones show they differ substantially from tooth and claw marks that can be left by predators.
实验室工作人员和我们的内部金相实验室的设备也扩大到包括切割，抛光，腐蚀和金相分析。
Laboratory staff and our in-house metallographic laboratory equipment are also expanded to include cutting, polishing, corrosion and metallographic analysis.
对混凝土试块进行切割实验，并对分析同切割深度的不同形态所产生的原因。
Experiments of cutting concrete block were conducted and the reason for different fonns on different cutting depth was analyzed.
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