| 释义 |
ˈcounter-ˌceiling
[counter- 8 b.]
A layer of dry material filled in between the joists of a floor to deaden or prevent the passage of sound; ‘pugging’.
1859T. L. Donaldson Handbk. Specif. 841 Counter ceiling to be laid under the ground floor..and..run in with plaster of Paris. Ibid. 864 Counter ceilings to be..composed of lime, sand, screened ashes, and chopped hay..between the joists upon slate bearers. |