In-situ concrete walling, like precast concrete block walling, is being used more these days than years ago, mainly because of the speed of erection.是什么意思_In-situ concrete walling, like precast concrete block walling, is being used more these days than years ago, mainly because of the speed of erection.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句