空调制冷用Φ5 mm瘦齿大螺旋角内螺纹铜管旋压成形和管内换热性能
공조제랭용Φ5 mm수치대라선각내라문동관선압성형화관내환열성능
Bali Spinning Forming Process and Heat Transfer Performance of Φ5 mm Inner-Grooved Copper Tube with Slimmer Tooth and Larger Helical Angle for Air Conditioning and Refrigeration
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