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水型地氟病区,改水是预防地氟病的重要措施,为了确保改水的成果,于1996年9月,对汝州市所有降氟改水工程和管理实施进行核查、评判分析。 1 评判分析。 1 调查方法与内容
Water-based fluorosis area, water change is an important measure to prevent fluoride disease, in order to ensure that the results of water changes, in September 1996, all of Ruzhou City fluoride fluoride water projects and management implementation verification, analysis and analysis. 1 Judgment Analysis. 1 survey methods and content