经典LBG算法的局部极小值问题是制约其性能的重要因素。
The local minimum problem is a much important factor which restricts the performance of the classic LBG algorithm.
这里既有历史上轻商、抑商等局部文化的束缚，也有制度缺陷的制约。
It is restricted by system shortcomings and tied by partial culture of belittling commerce.
构造裂缝的发育受岩石本身的力学性质以及局部构造制约，区域裂缝则与区域应力场强度有关。
The growth of structural fracture is controlled by such factors as lithology, porosity, lamellation and local structures, and the regional fracture controlled mainly by the regional stress field.
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