brake horsepower
noun
(复同单)
1- an imperial unit of power, equal to one horsepower but used only as a measure of the power available at the shaft of an engine制动马力（仅指发动机传动轴的可用功率的英制单位, 等于1马力）。
1.1
- the available power of an engine, assessed by measuring the force needed to brake it制动马力。