锰是工业生产中不可缺少的原料之一,随着社会主义建设的日益发展,锰合金及其各种化合物的生产和使用也日益广泛。毛主席教导我们:“应当积极地预防和医治人民的疾病,推广人民的医药卫生事业”,因此,为了适应社会主义革命和建设的需要和保护工 Manganese is one of the indispensable raw materials in industrial production. With the development of socialist construction, the production and use of manganese alloy and its various compounds are also increasingly widespread. Chairman Mao taught us: “We should actively prevent and cure people’s diseases and promote people’s medical and health undertakings.” Therefore, in order to meet the needs of socialist revolution and construction and protect workers