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对某水泥厂的生料、熟料及成品等 10个作业岗位进行调查 ,结果有 5 0 %的岗位粉尘作业危害程度为Ⅲ级或Ⅳ级 ,且确诊为水泥尘肺的病例有 73 33 %的患者是在Ⅲ级和Ⅳ级粉尘作业岗位工作。
A survey of 10 jobs including raw materials, clinker and finished products of a cement plant resulted in 50% of the jobs dusting grade Ⅲ or Ⅳ, and 73 33% of those diagnosed as cement pneumoconiosis The patient is working in grade Ⅲ and grade Ⅳ dust jobs.