The investigation results on natural uranium concentrations in drinking water sources, Hei River and Ba River, in Xi 'an City are presented in this paper.
对西安市生活饮用水源黑河与灞河水体中天然放射性元素铀含量进行了调查。
Zhangye rests it head on Qilian Mountain in the south and leans on Heli Mountain in the north, with Hei River running through its territory, forming a distinguished view of oasis in desert.
张掖南枕祁连山，北依合黎山、龙首山，黑河贯穿全境，形成了特有的荒漠绿洲景象。
Zhangye rests it head on Qilian Mountain in the south and leans on Heli Mountain in the north, with Hei River running through its territory, forming a distinguished view of oasis in desert.
张掖南枕祁连山，北依合黎山、龙首山，黑河贯穿全境，形成了特有的荒漠绿洲景象。
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