The effect of pre oxidation of the Kovar alloy Fe Ni Co on the resulting glass Kovar seal has been studied using metallography, XRD and SEM.是什么意思_The effect of pre oxidation of the Kovar alloy Fe Ni Co on the resulting glass Kovar seal has been studied using metallography, XRD and SEM.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句