The cross-sectional areas of the pore openings vary along their length. 孔隙通道的橫截面面積沿其長(cháng)度方向變化。
Rearrangement would account for the open spaces giving rise to a matted appearance of the noninterwoven structure. 重新排列被認為是在并非相互交織的組織結構中出現孔隙因而形成網(wǎng)狀組織的原因。