本文报道了烟煤煤矿井下工人22年追踪观察的职业流行病学调查研究结果。
The paper reported the epidemiological results of 22-year follow-up study of workers exposed to dust at bituminous coal mines.
本文报道了烟煤煤矿井下工人22年追踪观察的职业流行病学调查研究结果。
The paper reported the epidemiological results of 22-year follow-up study of workers exposed to dust at bituminous coal mines.
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