罐装饮料已有五十多年的历史。一九六二年,拉开罐的问世是罐装饮料的第一次重大变革。现在,在试制中的自冷罐将成为罐装饮料的第二次变革。自冷罐是利用压缩空气膨胀时会使温度下降的原理而制成的。这种自冷罐的内 Canned drinks have more than 50 years of history. In 1962, the first major change in canned beverages was the advent of canning. Now, in the trial of the self-cooling tank will be the second revolution in canned drinks. Since the cold tank is the use of compressed air expansion will make the temperature drop principle and made. This self-cooling tank inside