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收集了较全面的氡子体、砷、粉尘等环境资料，较详尽地评价了职业危险因素致肺癌的作用。研究结果进一步证实了氡子体、粉尘等职业因素是肺癌发生的主要病因；慢性支气管炎史是肺癌独立的危险因素。
We collected more comprehensive environmental data such as Radon, arsenic, and dust, and detailedly evaluated the effects of occupational risk factors on lung cancer. The research results further confirmed that occupational factors such as radon daughter and dust are the main causes of lung cancer; the history of chronic bronchitis is an independent risk factor for lung cancer.