Creative Cupcake Dessert Stand,Olive Wood Kitchenware,Portable Cheese Grater,Non-Slip Olive Wood Balls SHAOXING GENTSWELL ARTS & CRAFTS CO.,LTD , https://www.sxolivewood.com1 Thermodynamic basis of refrigeration and low temperature 2 Principle and technology of refrigeration 2.1 Vapor compression refrigeration 2.1.1 Vapor compression refrigeration cycle and refrigerant 2.1.2 Thermal calculation of vapor compression refrigeration cycle 2.1.3 Composition of vapor compression refrigeration system 2.1 .4 Automatic adjustment of vapor compression refrigeration 2.1.5 Application of vapor compression refrigeration 2.2 Absorption and adsorption refrigeration