kwalabe na Thermos, wanda kuma aka sani da vacuum flasks, babban kayan aiki ne don kiyaye abubuwan sha masu zafi ko sanyi na wani lokaci mai tsawo.Bugu da ƙari, dacewa, thermos yana alfahari da ingantaccen tsarin rufewa wanda ke rage zafin zafi ta hanyar gudanarwa, convection, da radiation.A cikin wannan...
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