纺丝过程中纤维皮层结构受到更大的拉伸取向作用，并在纤维表面出现一定游离原纤化结构。
A certain degree of free fibrillar structure was observed on the fiber surface due to the sheath structure of the fiber subjected to the greater drawing and orientation.
发梢开叉是角质层受损和皮层的纤维开裂所致。
Split ends occur when the cuticle is damaged and the fibres of the cortex unravel.
这是发生在皮肤的真皮层，由于胶原蛋白和弹力纤维越来越硬，厚而然后结合在一起。
This occurs in the skin's dermis, as a result of collagen and elastin fibers becoming hard, thick, and then binding together.
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