However, the structure adjustment and system optimization should be based on the integral understanding of the agricultural production system, and its regularity of systematic structural evolution.
农业结构的调整，必须建立在对系统整体认识的基础上，必须符合系统结构本身的演变规律。
Based on the assumption of water resources system is a dissipative structure, the water is regarded as a sequential parameter to describe the sequence and evolution direction of system.
水资源系统是一耗散结构，本文以水资源量作为序参量，来描述水资源系统的有序性和演化方向。
Using the viewpoint of geomechanics, the geological structure in Yangquan Mining Area is analyzed, and the structural system, the structure evolution and its formation mechanism are discussed.
运用地质力学的观点分析阳泉矿区地质构造，探讨构造体系、构造演化及其形成机制。
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