Successfully carburize on a sample surface of alloy bar grate by plasma technology, making case carbon content more than 1.5% and depth of carburizing layers about 1 mm, improving the case hardness greatly.是什么意思_Successfully carburize on a sample surface of alloy bar grate by plasma technology, making case carbon content more than 1.5% and depth of carburizing layers about 1 mm, improving the case hardness greatly.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句