And found-that to increase the degree of openness of fiber and to control correctly the entering air current are two efficient ways to improve fiber web irregularity.
并认为提高纤维开松程度、梳理程度，控制补风方式是降低纤维网横向不匀率的有效途径。
2
Buildings can be classified into regular, normal irregular, beyond normal irregular and seriously irregular structures, according to the degree of irregularity.
建筑物按不规则程度可以分为：比较规则的结构、一般不规则结构、特别不规则结构和严重不规则结构。
3
Mine fault network is a fractal system with statistic self-similarity. Its complexity degree can be quantitatively evaluated using fractal dimension that can describe geometrical irregularity.