In this paper, the main factors affecting tunnel erosion and their mechanism were studied based on field survey and data from sample analysis.

本文以野外调查和资料分析为基础，分析研究了影响洞穴侵蚀的主要因素和机理。

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This paper conducts a detailed survey on this contract mechanism, at the same time it makes a systemic evaluation on them.

文章对这种契约机制进行了详细的理论综述，同时，对它们作了综合的评价。

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OBJECTIVE: To further understand the mechanism and process of memory storage on the basis of summarizing the survey about molecular mechanism on memory storage at home and abroad.

目的：综述国内外有关记忆储存分子机制的研究概况，以期进一步了解记忆储存的机制和进展。

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