在深基坝支护设计中，对钉土作用机理存在着许多模糊认识。
There is some ambiguity about the soil-nail interaction mechanism in the design of soil nailing reinforcement.
实际油藏构造和流动机理的模糊性和不确定性，使得传统的模型和算法无法或者很难描述和求解。
The ambiguity and uncertainty of reservoir actual structure and fluid flow mechanics make it difficult for conventional modeling and algorithms to describe and solve.
通过对沉积物的模糊聚类分析，探讨了沉积物的存在模式及其形成机理。
Through fuzzy cluster analysis of the deposit, different types and their forming mechanism are delved.
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