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为推进螺杆制冷技术在我国的进一步发展,促进生产厂的技术进步,宣传推广螺杆式制冷机在工程应用中的成功经验,上海市制冷学会制冷机械与设备专
In order to promote the further development of screw refrigeration technology in our country, promote the technological progress of the production plant and publicize and promote the successful experience of screw refrigeration machine in engineering application, Shanghai Refrigeration Institute of Refrigeration Machinery and Equipment