It serves the purpose of measuring the hardness of ferrous,non-ferrous metals,hardmetals,carburized layers and chemical treating layers.是什么意思_It serves the purpose of measuring the hardness of ferrous,non-ferrous metals,hardmetals,carburized layers and chemical treating layers.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句