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湖北省碘缺乏病的流行分布与地势、地貌、土壤、地层岩性、饮水中的碘含量以及构造带密切相关。
The endemic distribution of IDD in Hubei province is closely related to topography, soil, land features, stratum- lithology, iodine content in drinking water and tectonic zones.
雅安山地面积占94%，地势高低悬殊大，河流深切，水流湍急，大地构造位置跨西部地槽，东部地台。
The mountainous area accounts for 94% in Yaan. There is a great difference in the height of hypsography, and stream is rapid, and the tectonics cross the west geosyncline and east platform.
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