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一、概 述 我国自六十年代开始大面积发展沥青路面以来,部分公路干线和城市道路与郊区公路随着交通量迅速增长,沥青路面的
I. Overview Since the 1960s, our country started to develop asphalt pavement on a large scale. As the traffic volume of some highways and urban roads and suburban highways grow rapidly,