preservation of food 食物保存 ; 食品保藏
Package and preservation of food 食品包装与储藏
radiation preservation of food 辐射食品防腐
the preservation of food 食物的保存
smoking preservation of food 食品烟熏保藏
method of food preservation 食品保存方法
Classification of food preservation 食品保藏法分类
THE HISTORY OF FOOD PRESERVATION 食物保存的历史
Preservation and Manufacture of Food 食品保存及生产 ; 食品保鲜及加工
"Food additive" means any synthetic compound or natural substance put into food to improve its quality, colour, fragrance or taste, or for the sake of preservation or processing.
食品添加剂：指为改善食品品质和色、香、味，以及为防腐和加工工艺的需要而加入食品中的化学合成或者天然物质。
Drying is one of man's oldest methods of food preservation. It is a process copied from nature; we have improved certain features of the operation.
干燥是人类保藏食品最古老的方法之一。
Then began this business of deliberate food-growing and of food preservation .
然后开始这种有意识地种植粮食和储存食物的活动。
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