river pattern change and control 河势演变与控制
The process and characteristics of its river pattern change depend on its unique geologic environment. The hydrologic condition, as a dynamic factor is also restricted by geologic environment.
下荆江河势演变过程及特点是因其所处的特殊地质环境决定的，作为动力因素的水文条件也受地质环境的制约。
The fractures of the alloys change from dimple to cleavage fracture with river pattern.
合金的断口形貌由韧窝向河流花纹状的解理形貌转变。
Through analysed workable coal seam change features, coal-rich zone, the distribution features of coal accumulation Center, describe the pattern of Chengzihe River Formation in Jixi coal Basin.
通过对可采煤层变化特征及富煤带、聚煤中心分布特征的分析，简述鸡西盆地城子河组煤层聚煤规律。
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