Cov Khoom Siv Corollary
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Boya Comb Pleating Tshuab
Lub tshuab no yog cov khoom siv pleating rau cov tshuaj fiber ntau thiab cov ntaub sib xyaw.Cov ntaub tuaj yeem siv los ua ntau hom khaub ncaws tom qab cua sov thiab pleating, xws li txoj phuam qhwv caj dab, tsho, mantle, me nyuam khaub ncaws thiab tiab.
