Due to the seasonal freeze thaw erosion and particularity of erosion effect that little research work has been conducted on this aspect both at home and abroad.
冻融侵蚀的季节性和侵蚀作用的特殊性，使得国内外对这方面的研究开展很少。
2
In the seasonal frost regions, more attention is often paid to frost heave index in the aspect of prevention and cure of roadbed frost damage.