We tested some PDC samples with different geometrical shapes and found that the geometrical shapes of PDC have a considerable influence on the testing results of the G-ratio of PDC.

• 通过对测试部位几何形状不同的PDC样品进行磨耗比测试,其结果发现,PDC测试部位的几何形状对最终的磨耗比测试结果有较大影响。