As addition of ash is 65%~75%,the building materials of lower strength,for example masonry cement and building mortar,can be produced.是什么意思_As addition of ash is 65%~75%,the building materials of lower strength,for example masonry cement and building mortar,can be produced.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句