The insulator comprises a pair of vinyl sheets which are bonded to each other for forming a number of oblong sealed chambers. The chambers contain gas such as fleon 11 or fleon 12 which has small thermal conductivity. The size of the chambers pref., is 50 X 10 mm to reduce the heat loss caused by gas convection.
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机译:绝缘体包括一对乙烯基片,它们彼此粘合以形成许多长方形的密封室。腔室容纳诸如氟利昂11或氟利昂12之类的气体,其具有小的热导率。腔室的尺寸优选为50 X 10 mm,以减少由气体对流引起的热损失。
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