A survey on graphite pneumoconiosis was reported. 本文报道了石墨尘肺的调查结果。
The free SiO_2 contents of five kinds of seale graphite products were shown to be 0~ 3%, 384 workers who exposed to those dust were examined physically. The incidence of graphite pneumoconiosis was 7.29%; 五种鳞片石墨产品中游离SiO2含量为0~3%。