The results showed that the wear rate of new Al Sn Si alloys is lower than that of Al 20Sn alloy, and decreases with increase of silicon content.是什么意思_The results showed that the wear rate of new Al Sn Si alloys is lower than that of Al 20Sn alloy, and decreases with increase of silicon content.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句