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医疗单位一般都使用适用范围１８℃～３６℃环境温度内的亚热带（ＳＴ）型冰柜用作速冻贮藏医疗用品的需要。该类（ＳＴ）冰柜在环境温度超过４０℃，且通风较差的房间里使用时就不能保证在强制冷工况下，使冰柜内部温度达到－１８℃以下。笔者在９８年夏季持续４０℃高温时候
Medical units generally use a subtropical (ST) type freezer within the range of 18°C to 36°C ambient temperature for the purpose of quick-freezing storage medical supplies. When using this type of (ST) freezer in a room with an ambient temperature of over 40°C and poor ventilation, it cannot be guaranteed that the internal temperature of the freezer will reach below -18°C under strong refrigeration conditions. I spent 40 years at high temperatures in the summer of 1998