Hauv kev nrawm - Paced lub ntiaj teb ntawm kev lag luam chaw, qhov twg kev txaus siab, thiab cov neeg siv khoom sib koom tes ua ke tuaj yeem cuam tshuam ua rau kev ua lag luam ua tau zoo. fridge ob lub rooj kaw lub rooj chav nyob ua ke yog pivotal fixtures muab ib
Yav dhau los, cov ncej puab qab rooj yuav tsum tau welded artificially, lub zog wel plees, nws yuav yog ib qho teeb meem kom sib sau ua ke lub khob insulated zoo. Qee zaum nws yuav ua rau insu
Kev ua haujlwm kom tsim nyog ntawm lub qhov rooj qhov rooj tub yees lossis lub tub yees txias yog qhov tseem ceeb, thiab kev ntxuav yuav tsum yog qhov tseem ceeb rau kev ua haujlwm kom ua haujlwm. Yog tias tsis muaj kev ntxuav, av, hmoov av, thiab gime yuav txhim tsa, thiab yuav ua rau muaj kev ua tsis tau zoo. Raws qab