heating ventilating and air-conditioning systems

• 暖通空调系统

heating ventilating and air-conditioning systems的用法和样例：

例句

1. According to the future requirement of HVAC systems along with the development of related technologies, previews the trends of energy control technologies.
   根据暖通空调系统的未来需求和相关技术的发展，提出了其控制技术的发展方向。