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

CNN: STORY HIGHLIGHTS

The ship generates and distributes its own power, provides and maintains sanitation, heating, ventilation and air conditioning systems, and makes several hundred thousand gallons of water every day from sea water.

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Rupert said the same chlorine dioxide treatment will be used on the building's heating, ventilation and air conditioning system (HVAC), where spores had been found after the letter was opened in Daschle's office.

CNN: Fumigation largely succeeding in clearing anthrax