山西省朔州市神头二电厂附近的一个灰塘。
One of the coal ash ponds near Shentou number two power plant, Shuozhou, Shanxi province.
吐哈油区三塘湖油田牛圈湖区头屯河组砂岩储层主要为岩屑砂岩，平均孔隙度为19。
The Toutunhe sandstone reservoir in Niuquanhu area of Santanghu oilfield is mainly lithic sandstone, with an average porosity of 19.
根据金沙江流域防护林建设的需要，在会泽县头塘小流域的4种不同立地类型内，进行了7个树种的生长和防护功能对比试验研究。
In Toutang small watershed of Huize county, contrast test and research were carried out on growth and protective function of 7 species in 4 different site types.
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