The experimental results show that sharp increment of toughness mainly results from fine grain size and a few unsoluble needle ferrites in the microstructure of steel after intercritical heat treatment(IHT).是什么意思_The experimental results show that sharp increment of toughness mainly results from fine grain size and a few unsoluble needle ferrites in the microstructure of steel after intercritical heat treatment(IHT).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句