SEM morphologies of wearing surface showed that wear behaviour of new Al Sn Si alloys is mainly metallic wear, and that of Al Sn alloy consists of metallic and fatigue wear.是什么意思_SEM morphologies of wearing surface showed that wear behaviour of new Al Sn Si alloys is mainly metallic wear, and that of Al Sn alloy consists of metallic and fatigue wear.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句