基于俞茂宏统一强度理论，研究了砂土在复杂应力状态下的动强度及其指标确定的新方法。
A new method was proposed to determine the dynamic shear stress and dynamic strength index of soil under the complex stress, based on the Yu Maohong's unified strength theory.
再次，在针对核心问题而建立的评价指标体系的基础上，进行相对应的规划策略与宏、中、微观角度的具体规划措施的研究与阐述；
Thirdly, on the base of appraisal system which aims at the key problem, carry on planning strategies and measures from macro-level, mid-level, and micro-level perspective.
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