与之相对应，汇率理论中微观基础和宏观规律之间的联系也一直没有得到合理的说明。
Correspondently, we also can not give a reasonable explanation to the linkages between the micro basic theory and the macro law for the exchange rate.
试验研究了X70管线钢在模拟土壤介质中，循环载荷下的裂纹扩展特性和宏观规律。
The crack propagation characteristics of X70 pipeline steel in the synthetic soil solution under cyclic loading are investigated. The macroscopical rules of the crack propagation are analyzed as well.
试验研究了X70管线钢在模拟土壤介质中，循环载荷下的裂纹扩展特性和宏观规律。
The crack propagation characteristics of X70 pipeline steel in the synthetic soil solution under cyclic loading are investigated.
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