The paper introduced the application of new materials of Xuan da freeway cement concrete pavement and slipform paving DBI technology,analyzed relative problem.是什么意思_The paper introduced the application of new materials of Xuan da freeway cement concrete pavement and slipform paving DBI technology,analyzed relative problem.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句