Reading:关于在进行水泥浆填补空洞的地区的周边相关位置出现沥青，可以开发使用，循环填补空洞。Asphalt can be developed and used in locations around areas where cement slurry is used to fill cavities. Encycle to fill the hollows of the earth.
关于在进行水泥浆填补空洞的地区的周边相关位置出现沥青，可以开发使用，循环填补空洞。Asphalt can be developed and used in locations around areas where cement slurry is used to fill cavities. Encycle to fill the hollows of the earth.
