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结果改炉改灶率不断提高，降氟效果明显，总结了很多有益经验。
Results Raising the rate of changing kitchen range, the achivement on reducing fluoride was obvious, sum up a lot of useful experience.
目的了解长江三峡燃煤污染型地方性氟中毒试点地区改灶降氟措施的效果。
Objective to know the effects of changing cooking stoves in reducing fluoride level in Changjiang Sanxia coal pollution burned experimental endemic fluorosis areas.
采取改炉改灶防治措施后居室空气中的氟浓度已大幅下降，但还未达到国家标准。
After adapting some measures of change stoves, the content of fluorin in resident air is dropped and hasn't got permitted standard.
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