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湖南省安化县清塘镇久泽坪村属１９８４年病情调查确定的燃煤污染型氟中毒中等病区。省、地、县于１９８５年对该村开展了防治试点工作，并于当年逐户进行了降氟改灶。为了解１２年来该村居民降氟改灶防治效果，我们分别于１９８４年、１９９１年和１９９７年进行调查。现将结
Qingze Town, Anhua County, Hunan Province, Juzeping Village is a coal-contaminated fluorosis poisoning medium ward identified by the 1984 disease survey. Provinces, prefectures and counties in 1985 to carry out prevention and control of the village pilot work, and in the same year by fluoride to cooker. In order to understand the prevention and control effect of Fluorine-containing stoves in the village over the past 12 years, we conducted investigations in 1984, 1991 and 1997 respectively. Now will end