Operating costs of using the steam jet refrigeration system to cool the temperature of water in air conditioning system are lower than the refrigerative compressor.
There is a catch, though: artificial insemination in African elephants with semen that has been frozen, as opposed to the fresh stuff, has not so far been done successfully.
中冰晶的形状和粒度分布。
冷设备作为空气调节系统
费用及经常运转费用方面均较氨
为止，
