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- 160/230/352毫米Schmidt望远镜的设计和制造 THE DESIGN AND MANUFACTURE OF 160/230/352 mm SCHMIDT TELESCOPE
- 方法选取某化纤企业352名噪声和高温作业人员为观察组,263名同厂非噪声和高温作业人员为对照组,采用现场调查、环境监测和职业性体检的方法进行现场和健康情况的调查。 [Methods] 352 noise and heat-exposed workers in a chemical fiber enterprise were taken as the observation group and 263 non noise and heat-exposed workers in the same factory were taken as the control group.
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