Tuj hnab ua lub luag haujlwm tseem ceeb hauv kev thauj mus los. Dab tsi yuav tsum tau them nyiaj mloog thaum tsim lub hnab ntim khoom? Muaj plaub yam tseem ceeb hauv kev tsim: kev nyab xeeb, cia, siv tau, thiab sealing.
1. Kev nyab xeeb, kev nyab xeeb yog ib qho teeb meem uas yuav tsum tau them sai sai rau thaum tsim lub hnab ntim. Ib qho teeb meem tseem ceeb uas yuav tsum tau them sai sai rau hauv kev tsim cov hnab ntim khoom kuj yog ib qho tseem ceeb ntawm cov hnab ntim ton.
2. Kev saib xyuas. Kev saib xyuas kuj yog ib qho teeb meem tseem ceeb uas yuav tsum tau them sai sai rau hauv kev tsim cov ton hnab. Kev saib xyuas yog ib qho teeb meem tseem ceeb uas tsis tuaj yeem tsis quav ntsej thaum siv lub hnab ntim khoom.
3. Kev siv tau thiab siv tau yog ib qho tseem ceeb uas yuav tsum tau xav txog rau lub hnab ntim khoom, thiab nws kuj yog ib qho tseem ceeb uas yuav tsum tau ua.
Thib plaub, ntxiv rau kev nyab xeeb, kev cia khoom, thiab kev siv tau, muaj lwm qhov tseem ceeb rau lub hnab ntim khoom, uas yog, sealing, uas tseem yog ib qho tseem ceeb ntawm cov hnab ntim khoom.