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heating, ventilation and air conditioning
hydroel.st.	供暖、通风与空调; 供暖通风与空调
heating, ventilation, and air conditioning
auto.	取暖、通风和空调
heating ventilation and air conditioning
nucl.pow.	采暖通风及空调
heating, ventilation and air-condition
nautic., tech.	采暖、通风和空调
heating, ventilation and air-conditioning
tech.	暖通调控
Heating Ventilation and Air Conditioning
railw.	供暖系统
English thesaurus
Heating, Ventilation, and Air Conditioning
abbr., O&G, sahk.r.	HVAC
Heating, Ventilation and Air-Conditioning
abbr., astronaut., mil.	HVAC
Heat Ventilation And Air Conditioning
el., abbr.	HVAC

heating, ventilation and air conditioning: 2 phrases in 2 subjects

Nautical	1
Rail transport	1