Puas yog qhov yooj yim ntawm hnav khaub ncaws tiv thaiv zoo li qub tseem ceeb?
Los tiv thaiv cov khaub ncaws zoo li qub siv nyob rau hauv kev tsim khoom txhawm rau tiv thaiv hluav taws xob zoo li qub uas tsim los ntawm tib neeg lub cev los ntawm kev puas tsuaj cov khoom lag luam. Cov neeg feem ntau them sai sai rau seb puas yog cov ntaub ntawm cov khaub ncaws tiv thaiv zoo li qub muaj tus cwj pwm zoo, tab sis tsis saib xyuas qhov ua haujlwm ntawm cov khaub ncaws tiv thaiv zoo li cov khaub ncaws nws tus kheej-qib degree.
Ntau tus neeg ua haujlwm tsis txaus siab txog qhov yuav tsum tau coj los tiv thaiv kev tiv thaiv zoo li qub thaum ua haujlwm, vim hais tias cov khaub ncaws tiv thaiv zoo li qub tsis ua pa thiab muaj qhov tsis muaj qhov ncab. Piv txwv li, cov khaub ncaws dog dig tsis yooj yim, tab sis vim yog kev ua haujlwm thiab vim tias lawv" tsis muaj zog" ;, lawv tsis twv nthuav tawm, Ris muag ntsiag to. Qhov no xav kom cov neeg yuav khoom tau them ntau dua los xyuas kom meej qhov yooj yim ntawm cov khaub ncaws ntau li ntau tau thaum xyuas kom muaj kev ua haujlwm ntawm cov khaub ncaws tiv thaiv zoo li qub.
Ntawm ib sab tes, nws yog qib ntawm huab cua permeability ntawm cov ntaub. Nyob rau tam sim no, muaj hom tshiab-los tiv thaiv kev ua haujlwm khaub ncaws ntau lawm txheej txheem txheej txheem-puab cov paj rwb thiab txheej sab nraud polyester. Cov txheej txheem ntau lawm no tuaj yeem ua kom cov anti-zoo li qub thaum tseem muaj huab cua zoo permeability. Ntawm qhov tod tes, cov ntaub polyester siv nyob rau hauv cov khaub ncaws tiv thaiv kev ua haujlwm muaj qhov tsis zoo, yog li thiaj li cia cov neeg ua haujlwm muaj chaw nyob hauv kev ua si, nws raug nquahu kom teem ib lossis ob lub tsev loj dua thaum tsim cov khaub ncaws tiv thaiv zoo li qub.