Experiments of the gasoline enging fueled with blends of gasoline and ethanol or aquiferous ethanol .

汽油机燃用乙醇和含水乙醇与汽油的混合燃料的试验研究。

Luohandong aquiferous group distribute as limited , thickness widely different , water quality changing heavily , besides east area of gansu province , value of supply water is relatively little in most areas .

罗汉洞含水岩组因分布面积小，含水层厚度差异大、水质变化大，除陇东地区外，大部分地区供水价值较小。