Refining effect of boron on the hypoeutectic Al Si alloys and pure aluminum has been studied with SEM and XRD.是什么意思_Refining effect of boron on the hypoeutectic Al Si alloys and pure aluminum has been studied with SEM and XRD.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句