hvac
英
[ˈeɪtʃvæk]
美
[ˈeɪtʃvæk]
- abbr. 高压交流电（High Voltage Alternating Current）
HVAC
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abstract:
air ducts installed throughout a building to supply conditioned air to a room through outlet vents, called diffusers; and ducts to remove air through return-air grilles.]]
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WordNet