The new understanding on gully retrogressive erosion was put forward by an approach of relationship between tunnel erosion and other erosion forms.
最后还探讨了洞穴侵蚀与其它侵蚀方式之间的相互联系与作用，对沟谷溯源侵蚀的发生机理提出了新的认识和建议。
This paper dwells the concepts of retrogressive aggradation and the datum of erosion.
本文阐述了溯源淤积和侵蚀基准面的概念。
This paper dwells the concepts of retrogressive aggradation and the datum of erosion.
本文阐述了溯源淤积和侵蚀基准面的概念。
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