Materials and Methods:The datum of 20 patients proved by Occupation Disease Prevention and Cure Hospital were retrospectively analyzed.

材料与方法回顾性分析20例经职业病防治所确诊为矽肺的X线资料。

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There's contradiction between them and the work of occupation disease prevention, it makes the healthy bodies of employments cans not get the valid protection. 4 .

对开展职业病防治工作存在明显的抵触，使就业者身体健康得不到有效保护。

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There's contradiction between them and the work of occupation disease prevention, it makes the healthy bodies of employments cans not get the valid protection. 4 .

对开展职业病防治工作存在明显的抵触，使就业者身体健康得不到有效保护。

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