国产96AV视频在线观看_国产午夜激无码av毛片久_国产亚洲精品a在线无码尤物_欧美三级中文字幕字在线91_所有视频在线观看免费_亚洲日本综合在线_无码熟熟妇丰满人妻啪啪囗述_风流丝袜老熟女av_国产yw855.c免费视频_亚洲第一成年视频网站

Refrigerator is a kind of refrigeration equipment that keeps constant low temperature, and also a kind of civil product that keeps food or other articles at constant low temperature and cold state. There are compressors, ice makers for freezing cabinets or boxes in the box, and storage boxes with refrigeration devices.

Refrigerators are divided into refrigeration and freezing. The refrigeration temperature is higher than zero, usually between zero and ten degrees. They are used to refrigerate things, such as fruits, vegetables and cooked foods.

The freezing chamber temperature is below zero, generally below 18 degrees below zero. It is used to freeze meat, seafood and dry goods. The purpose of refrigerators is to keep food fresh and non-deteriorating.

Refrigerator is one of the necessary household appliances for every family. It can not only help us preserve the freshness of food, but also help us freeze something. In summer, when the weather is hot, it can also freeze drinks and watermelons.