Vim muaj kev sib tw, vim muaj kev ntxias kom tau txiaj ntsig; Yog li ntawd, yeej ib txwm muaj qhov zoo thiab qhov phem hauv kev ua lag luam, tab sis qee yam tuaj yeem txheeb xyuas tau sai sai, thiab qee yam yuav tsum tau txheeb xyuas kom zoo thaum lub sijhawm yuav khoom, txwv tsis pub lawv yuav raug dag. Piv txwv li, cov hnab woven, thaum yuav, cov neeg siv khoom yuav tsum xaiv kom zoo, peb yuav nkag siab txog kev xaiv cov hnab woven zoo.
Feem ntau hais lus, cov hnab ntaub tuaj yeem sib txawv ntawm cov xim thiab kev xav. Cov hnab ntaub uas ua los ntawm cov khoom siv ntshiab feem ntau muaj lub teeb pom kev zoo thiab xav tias du yam tsis muaj burring. Tab sis hom kev no rau cov neeg siv khoom ib txwm yog tus tswv tsis zoo, tsis yog tus qauv, qhov sib piv ntawm cov hnab ntaub yog hais txog qhov ntev ntawm cov hlua khi ib 'meter', chav tsev yog g / m, rau cov khoom siv hlua khi ntshiab, qhov sib piv ntawm cov hlua khi yog 3.5 g / m, qhov sib piv ntawm cov khoom siv hlua khi ntshiab yuav tsis loj heev, vim tias cov khoom siv ntshiab tuaj yeem rub hauv cov txheej txheem ntau lawm ntev heev. Yog tias cov hlua raug cored, qhov hnyav tshwj xeeb yuav siab dua tus nqi no. Qhov no kuj yog vim muaj kev ntxiv ntawm ntau yam khoom siv.
Tsuas yog lub hnab ntaub zoo xwb thiaj li qhia tau tag nrho cov txiaj ntsig ntawm lub hnab, txwv tsis pub tag nrho nws cov yam ntxwv kev ua tau zoo yuav ploj mus nrog qhov tsis zoo. Vim yog kev siv tshwj xeeb ntawm cov hnab ntaub, muaj cov kev cai nruj rau lawv qhov zoo.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-14-2020