However, the cross-sectional shape frequently departs from the circular and at times this eccentricity may assume importance . 然而，横断面形状往往偏离圆形，而且有时这种偏离是有其重要性的。
It was found that fibers of circular cross section produce greater cohesion in webs and slivers than do trilobal fibers . 圆形横截面纤维在棉网和棉条中，比三叶形横截面纤维能产生较大的粘着作用。
The shape factor is less for rounder or streamlined objects than for irregular or sharp-edged structures or elements . 对圆形或流线型的物体来说，形状图子要比不规则的或棱角分明的结构物或部件小得多。
