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郑汴高速公路沥青面层出现拥包病害的内因及外因分析，并叙述内因是引起病害的主要因素，外因则起了推波助澜的作用。
The internal and external causes of congealed diseases appear on the asphalt surface of Zhengtao Expressway, and the internal factors are the main factors that cause diseases. The external factors play a role in fueling the disease.