短语词组短语Cut -Back k Asphalt 油溶沥青CUT -BACK ASPHALT MC-2 快干涂料柏油MCSlow Curing Cut -Back Asphalt SC 慢凝油溶沥青medium -curing cut-back asphalt 中凝轻制沥青CUT BACK ASPHALT MC -70 快干涂料柏油MC 返回 cut-back asphalt