在产生高于平均热量的区域需装上通风和现场冷却系统，如在主洗衣房、客人洗衣房、干洗区、面包房和员工厨房等区域。
Ventilation andspot cooling systems will carefully planned in areas that generate aboveaverage heat, such as Major Laundry, Guest Laundry and Dry Cleaning, Bakeriesand Employee cooking areas.
阐述了造成主井回风的自然热位差产生原因和对通风系统的影响，以及治理办法。
Mine, the causes of natural thermal potential difference in return air in main shaft and its influence on mine ventilation system and the control methods.
以实例分析优化主扇机选择在通风系统工程中的作用。
Demonstrate the function of optimization on choosing the main fan in ventilated system through the analysis of true examples.
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