principles and equipment of refrigeration
制冷装置及自动化：Refrigeration Equipment & Automatization 制冷原理与设备：principles and equipment of refrigeration 制冷与空调：Refrigeration and air-conditioning ..
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principles and equipment of refrigeration
制冷原理及设备
以上为机器翻译结果，长、整句建议使用 人工翻译 。