释义 |
curtain board curtain board[′kərt·ən ‚bȯrd] (building construction) A fire-retardant partition applied to a ceiling. curtain board, draft curtainA substantial noncombustible curtain, hung tightly against a roof or ceiling along the perimeter of a special-hazard area; acts as a partition in directing heat and smoke within the curtained area toward vents and preventing the spread of fire. |