1, kho kom zoo nkauj tsheb - zaj duab xis;
Cov yeeb yaj kiab yog thawj lub tswv yim ntawm cov tswv tsheb tshiab feem ntau, cov yeeb yaj kiab no tuaj yeem cais cov teeb ultraviolet, lub hnub ci yuav tsis ncaj qha rau hauv lub tsheb, thiab kev ceev ntiag tug zoo dua. Nws raug pom zoo kom cov tswv tsheb tshiab xaiv cov ntaub thaiv tawg. Cov yeeb yaj kiab tiv thaiv tawg muaj lub zeem muag zoo, txawm tias xim dab tsi los xij, nws pom tseeb heev los ntawm lub tsheb mus rau sab nraud, thiab tuaj yeem tswj tau lub zeem muag zoo thaum hmo ntuj thiab thaum hnub los nag. Kev xaiv cov yeeb yaj kiab tiv thaiv tawg yuav tsum xav txog qhov meej, pob tshab thiab cov nyhuv rwb thaiv tsev;
Tsis tas li ntawd xwb, daim zaj duab xis qhov rai tsheb, tshwj xeeb tshaj yog daim zaj duab xis qhov rai pem hauv ntej ntawm ob sab ntawm lub qhov rai, yuav tsum xaiv qhov xa tawm ntau dua 85% yog qhov tsim nyog dua, yog li daim zaj duab xis qhov rai sab tsis tas yuav khawb qhov thiab tsis cuam tshuam rau txoj kab pom, tsav tsheb thaum hmo ntuj mus rau tom qab ntawm lub teeb taub hau tsheb ci ntsa iab ntawm daim iav tom qab ntawm lub teeb ci ntsa iab muaj zog, yog li ntawd lub qhov muag xis nyob heev. Nws yog ib qho tseem ceeb kom xaiv daim nyias nyias zoo, thiab nws tseem ceeb ib yam nkaus kom xaiv lub khw zoo. Cov thev naus laus zis thiab cov xwm txheej mos thiab tawv ntawm daim zaj duab xis yog qhov nyuaj heev. Piv txwv li, ib puag ncig tsis muaj plua plav, cov khoom siv tshwj xeeb, cov txheej txheem ua haujlwm txheem thiab cov thev naus laus zis txawj ntse, thiab lwm yam, yog li ntawd, daim zaj duab xis yuav tsum tsis txhob xaiv lub khw muag khoom ntawm txoj kev.
2, kho kom zoo nkauj tsheb - khoom siv tiv thaiv tub sab;
Kev nyab xeeb ntawm lub tsheb yog qhov txhawj xeeb tshaj plaws, yog li ntau tus tswv ntawm cov khoom tiv thaiv tub sab yuav xaiv kom muaj, nruab nrog lub tsheb tiv thaiv tub sab hluav taws xob feem ntau tuaj yeem tswj lub qhov rooj ntawm chaw taws teeb, yooj yim heev thiab siv tau. Xaiv cov khoom siv tiv thaiv tub sab yuav tsum tau them sai sai seb puas los ntawm kev kuaj xyuas ntawm lub chaw haujlwm, seb puas qhia txog keeb kwm ntawm cov khoom. Tsis tas li ntawd, tam sim no, qee lub tuam txhab muag cov qauv tau teeb tsa lub kaw lus tiv thaiv tub sab, yog li lawv tsis tas yuav teeb tsa cov khoom tiv thaiv tub sab.
