Chronic simple silicosis has been reported to occur from environmental exposures to silica in regions with high silica soil content and frequent dust storms.
有报道慢性简单矽肺发生的环境暴露硅，高硅土含量和沙尘暴频繁的地区。
Chronic simple silicosis has been reported to occur from environmental exposures to silica in regions with high silica soil content and frequent dust storms.
有报道慢性简单矽肺发生的环境暴露硅，高硅土含量和沙尘暴频繁的地区。
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