A normal tendency is for them to gather in bundles, which have great strength and rigidity, but the conditions are not of the best for the gathering which is technically known as orientation.

• 一般希望它们能集合成束,这样长丝的强度和刚度均较高。但是对于长丝的汇聚(专业上称为取向),一般并不能达到最佳条件。