ball penetration test
1. Any horizontal flat member or molding or group of moldings projecting slightly from a wall plane and usually marking […]
General
General
General
balk, baulk
1. A squared timber used in building construction. 2. A low ridge of earth that marks a boundary line.
General
ballast factor
The ratio of the luminous output of a lamp when operated on a ballast to its luminous output when operated
General
ballast noise rating
A measure of the noise generated by a fluorescent lamp ballast; designated by letters from A (the quietest) through F