灌区范围内地下水硬度自2002年以来，呈现上升趋势，且上升趋势比较明显；
The hardness of the groundwater has showed a rising trend since 2002 and the upward trend is obvious;
结果表明：在连续入渗条件下，阳离子交换作用是控制地下水硬度升高的主要过程；
With the help of laboratory and thermodynamic simulation, the relation of nitrogen transformation with calcium and magnesium variation during wastewater infiltration in soil water system is studied.
本文将市区的浅层地下水硬度作为灰色量，用已有的硬度数据建立GM(1,1)灰色模型，预测其未来的变化趋势。
In this paper, the hardness of the shallow groundwater was treated as a grey variable and the GM (1, 1) grey model was created to predict the future trend of the change in hardness.
其中，混合水、地下水、地面水总硬度、硫酸盐、氯化物、耗氧量四项指标有显著差异（P<0.01）。
The total hardness, sulfate, chloride and consumption oxygen quantity in mixing water , underground water and surface water existed significant difference(P<0.01).
结果表明：该地区以地下水为水源的水厂水中总硬度、铁、锰的含量较高，超标严重。
The report indicates that the samples from waterworks using underground water as the source have much higher Ca, Mg, Fe and Mn content than the standards permitted.
结果表明：该地区以地下水为水源的水厂水中总硬度、铁、锰的含量较高，超标严重。
The report indicates that the samples from waterworks using underground water as the source have much higher Ca, Mg, Fe and Mn content than the standards permitted.
应用推荐