The data center has a dedicated heating, ventilation, and air conditioning (HVAC) system, so the temperature is always a cool 70 degrees Fahrenheit.

数据中心有专用的取暖、通风和空调(Heating, Ventilation, and Air Conditioning, HVAC)系统，因此温度始终是华氏70度。

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Install, troubleshoot and overhaul entire heating, ventilation, air handling, refrigeration and air conditioning systems.

安装工，故障排除和检修整个采暖，通风，空气处理，制冷和空调系统。

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With the increasing demands on indoor environment quality and energy consumption in modern buildings, heating, ventilation, air-conditioning systems become more and more complex.

随着人们对现代建筑室内环境质量和能源消耗要求的不断提高，供热、通风和空气调节系统变得越来越复杂。

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Additionally, the growing construction industry in Asia-Pacific, particularly China, has driven growth in heating, ventilation and air-conditioning, and real estate service businesses of Johnson Controls.

FORBES: Johnson Controls Earnings: Weak Europe Could Offset Gains From Asia

However, the most important aspect of this expansion is that it will allow Johnson Controls to address the growing demand for energy-efficient HVAC (heating, ventilation, and air conditioning) products from the building market in China.

FORBES: China's Urbanization Is Driving Johnson Controls' HVAC Growth

His study focused on the cost-effectiveness and productivity of "comfort control" systems regulating heating, ventilation and air conditioning.

CNN: STORY HIGHLIGHTS