织物中任一向纱线细度的变化均会引起内部孔隙结构和尺寸的变化，而渗透率K1和K2均会随着细度的降低而增加。
Any changes of yarn fineness will cause changes in structure and size of internal voids , while the principal permeability Kl and K2 will decrease with the increase of yarn fineness .
物任