By means of analysising the chemic component, optical structure and the SEM and measuring the microhardness, the samples with the crack in the hardface layer of continuous caster roller were studied.是什么意思_By means of analysising the chemic component, optical structure and the SEM and measuring the microhardness, the samples with the crack in the hardface layer of continuous caster roller were studied.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句