Mixed asphalt and crushed stone gravel or sand, used for paving or roofing.
Mixed asphalt and crushed stone gravel or sand, used for paving or roofing.
沥青混泥土碎石或沙子与沥青的混合物，用于铺路或封层顶
Mixed asphalt and crushed stone gravel or sand, used for paving or roofing.
沥青混泥土碎石或沙子与沥青的混合物，用于铺路或封层顶