测试部位为圆弧时，磨耗比最高。
If the testing part is arc, the testing value of G-ratio is the highest.
只要采用合理的加工参数，陶瓷结合剂金刚石砂轮研磨单晶金刚石磨耗比低、加工成本低。
If only reasonable parameters are selected, the grinding ratio with vitrified diamond wheel is lower and the machining cost is lower.
通过对测试部位几何形状不同的PD C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。
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.
本文在切比雪夫曲线拟合方法的基础上，提出了一种高次曲线磨耗形踏面的设计方法。
On the basis of Chebyshev curve fitting method, a new method to design worn profile tread is proposed by this paper.
试验结果表明，加入湿法白炭黑超细粉的试样拉伸强度比添加气相法白炭黑者提高了54%，扯断伸长率提高了64%，磨耗量降低了20%。
The results showed that the sample by adding the ultrafine powders of silica aerogel increased the tensile strength 54%, the elongation at break 64%, decreased the abrasion loss 20%.
试验结果表明，加入湿法白炭黑超细粉的试样拉伸强度比添加气相法白炭黑者提高了54%，扯断伸长率提高了64%，磨耗量降低了20%。
The results showed that the sample by adding the ultrafine powders of silica aerogel increased the tensile strength 54%, the elongation at break 64%, decreased the abrasion loss 20%.
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