Grain size had some effect on the rateofcrackpropagation.
晶粒尺寸大小对裂纹扩展速率也有影响。
2
The results showed that for the same material and the same iodine concentration, the rateofcrackpropagation increased with increasing temperature.
结果表明：对于同种材料在相同的碘浓度下，随着温度的升高，裂纹的扩展速率加快。
3
The result shows that the cracking load and the ultimate load are all increased to different extent, the rateofcrackpropagation has an obvious betterment and the seismic mechanism is also improved.