Cov kab xev thev xev khoom siv yog cov khoom ntim, cov khoom tsis zoo thiab tsis - khaus, muaj cua zoo permeability. Cov kab xev thev naus laus zis, yooj yim rau uncoil, yoojyim khiav lag luam; Nws yog tsim rau lub tsev kho mob chav kho mob kom tau txais kev kho mob lub hnab rwb phij hom ntaub ntawv. Kev kub nyhiab, ethylene oxide, formaldehyde sterilization, thiab lwm yam khoom siv hauv tsev kho mob kom tsis haum, tsim rau chav sib txeeb hauv nruab nrab, chav ua haujlwm, stomatology, thiab lwm yam.
