如何使那些处在供应困难乃至得不到供应的情况下的人员,吃到新鲜的食物,这是一个非常重要的问题。苏联全苏食品保藏研究所的研究人员,最近研究出用升华法来保藏食物,是对解决这一问题的具有重大意义的贡献。升华法所依据的原理是:冰在低温和低压下,能够越过液体状态而直接蒸发。这个方法使用起来很简便:把 It is a very important issue how to get those who are in a situation of supply difficulties or even lack of supply to eat fresh food. Researchers at the Institute of All-Russia Food Preservation at the Soviet Union recently developed sublimation methods for the preservation of food, making a significant contribution to solving this problem. The principle of sublimation is based on the principle that ice, at low temperatures and pressures, can evaporate directly across the liquid. This method is very easy to use: put