Ib leeg sealing cawv swabs yog ib qho tseem ceeb kom ntseeg tau tias tsis muaj menyuam thiab ua haujlwm tau zoo. Thaum raug huab cua, cov cawv tuaj yeem evaporate, ua rau lub swab tsis zoo lossis qhuav tag. Los ntawm kev khaws txhua lub swab ib tus zuj zus, qhov kev ncaj ncees ntawm cov ntsiab lus cawv yog khaws cia kom txog thaum lub sijhawm siv. Qhov no tseem tiv thaiv kev kis kab mob los ntawm lwm qhov chaw, kom ntseeg tau tias lub swab yog tsis muaj menyuam thiab muaj kev nyab xeeb rau siv rau ntawm daim tawv nqaij lossis qhov chaw. Hauv cov chaw kho mob, qhov no yog qhov tseem ceeb los tiv thaiv kev kis kab mob thiab ua kom cov qauv kev nyiam huv tshaj plaws. Rau kev siv tus kheej, nws lav tias txhua qhov swab yog tshiab thiab npaj los muab cov tshuaj tua kab mob zoofection.
Yog xav paub ntxiv txog cov khoom, thov mus saib
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