Kwalban Dewar kwalban, wanda Sir James Dewar ya ƙirƙira a cikin 1892, kwantena ne na ajiyar ajiya. Ana amfani dashi sosai a cikin jigilar kaya da ajiyar matsakaiciyar ruwa (nitrogen mai ruwa, oxygen mai ruwa, argon ruwa, da sauransu) da kuma tushen sanyi na wasu kayan aikin sanyaya. Craunar Dewar c ...
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