English中文EspañolFrançais
main duct /ˈmeɪn ˈdʌkt/ n

中文：主风管

中文 · 主风管Español · conducto principalFrançais · gaine principale
Meaning：Duct that leaves the furnace and carries hot air toward the branch ducts.
▶ Start interactive picture-tap lesson

Found in these illustrated scenes（1）

Forced warm air system

‹ Browse all scenes