[Brinell hardness number] n (1915): a number expressing Brinell hardness and denoting the load applied in testing in kilograms divided by the spherical area of indentation produced in the specimen in square millimeters--called also Brinell number
BRINELL HARDNESS NUMBER
Meaning of BRINELL HARDNESS NUMBER in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012