The Brindle hardness number (HB, formerly BHN) is defined as the ratio of the load P to the curved surface area of the indentation.是什么意思_The Brindle hardness number (HB, formerly BHN) is defined as the ratio of the load P to the curved surface area of the indentation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句