点击下载：《Food Safety and Home Food Preservation》课程教学课件（PPT讲稿）Food Preservation
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Lowering Water Activity 1. Dehydration 2. Concentration 3. Salt 4. Addition of SugarLowering Water Activity 1. Dehydration 2. Concentration 3. Salt 4. Addition of Sugar
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点击下载：《Food Safety and Home Food Preservation》课程教学课件（PPT讲稿）Food Preservation
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