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- groundwater quality variation 地下水质变
- An overarching aim is to draw attention to the importance of groundwater quality to human health under globa... 以期人们在评估全球变化条件下的健康问题上,给予地下水质量以重视。
- As a whole, the groundwater quality is good in Taipei basin, proximal-fan Lanyang plain and Kinmen. 整体而言，台北盆地、兰阳平原扇顶区及金门地区其地下水水质较佳。
- More and more people have been aware of groundwater quality change under the long-term utilization of chemical fertilizer in the recharge process. 摘要地下水在补给过程中受到长期施用化肥影响而引起水质的变化已越来越受到人们的重视。
- Based on data of the groundwater quality from Baicheng City in Jilin Province,the author compares with the other methods. 水质综合评价实际上是根据一定的水质判别标准对水质模式的好坏做出评价与分区。
- The application of the improved Nemerow index method to the evaluation of the groundwater quality in Panshi City shows more objective and logical results. 将改进的尼梅罗指数法应用于磐石市地下水环境质量评价,结果表明改进的方法更客观、合理。
- As the groundwater quality is poor naturally,the recognition of hydrogeochemical characteristics of natural groundwater is important for the groundwater quality protection. 地下水水化学评价结果表明,我国地下水水质先天不足,地下水水质保护工作要重视对天然地下水水文地球化学特征的认识。
- Based on the groundwater resources situation of Hohhot City,and by using grey relation method,this paper analyzes the groundwater quality of Hohhot City. 以呼和浩特市地下水资源状况为依据,利用灰色关联的方法,对呼和浩特市地下水污染情况进行分析。
- Numeric simulation is one of the principal means on evaluating the groundwater quality and simulating the occurrence and development of natural hydrogeology process. 摘要数值模拟方法是评价地下水水质、模拟自然界一些水文地质过程中发生和发展的主要手段之一。
- Because of fewer monitoring datas of groundwater quality in Shizuishan, the thesis applies many kinds of methods to predict water quality variety tendency of groundwater. 针对石嘴山市地下水水质监测资料比较少的特点,本文采用了多种方法预测地下水水质变化趋势。
- In the area, the chemical type is complicated, the natural groundwater chemical field evolves toward salinization and alkalination and groundwater quality tends to deterioration. 区内天然水化学场总体上向盐化和碱化方向发展，水化学类型趋于复杂化，水质朝变差的方向演化。
- Through analyzing the surveying data of shallow groundwater quality of Datong Basin,we can known that these integrating factors have reflected ground water quality. 通过对盆地浅层地下水水质实测资料的分析,了解了这些因素综合影响着地下水水质。
- Thirdly, detailedly analyse the factors for groundwater vulnerability, include relief, substrate, climate, groundwater exploitation, groundwater quality and pollution resource etc add in six factors. 详细分析了莱州市地下水脆弱性的因子，分别从地形地貌、地层、气候植被、地下水开采、地下水水质与污染源等6大方面进行了分析，结果表明：不同的影响因子对地下水脆弱性的影响是各不相同的，并且与地下水脆弱性并不是完全的呈现正相关或负相关，这需要根据外部环境以及各因子的自身特征决定。
- The mathematic model can reflect the actual hydrogeology of the local area, it can be used to simulate and predict the change of groundwater quality of Daba area in a certain extent. 所建数学模型能较好地反映当地的实际水文地质条件，运用水质模拟，可在一定程度上预测大坝地区地下水水质的变化。
- Additionally, the structure and quality variation of SEBS modified asphalt and SBS modified asphalt was analyzed both before and after aging by FHR (Fourier transform infrared spectrum). 用傅立叶红外光谱分析了沥青及SBS，SEBS改性沥青老化前后结构与性能的变化。
- Through analyzing the HTF's heating process, this paper provides six items and corresponding testing methods for how to determine the quality variation of HTF in use, and some evaluating indexes. 摘要通过对合成导热油加热过程的分析，提出了确定使用中的合成导热油品质变化程度的六个项目和测定方法，并提供了评价使用中的合成导热油品质变化的指标。
- To be examined the quality variation of the oxidated coal, two kinds of coal samples, blind coal and bituminous coal, were selected and heated in a series of temperature environments. 摘要为探讨煤在氧化后发生的性质变化，选取无烟煤和烟煤2种煤样，在不同的温度下进行加热。
- The results showed that the treatment efficiency of intercepting sedimentation tank with excellent capacity of intercepting flocculation and adaptability to water quality variation w... 结果表明，拦截沉淀池有优异的拦截聚沉和对水质变化的适应能力，处理效果要明显优于平流沉淀池而接近于斜板沉淀池，有很好的开发及应用前景。
- Through the analysis of water quality data for multi-years in stem river and tributary rivers in TGP reservoir area,the water quality variation before and after impoundment of TGP is analyzed. 通过对三峡库区干支流水文断面蓄水前后多年水质资料进行整理分析,分析了蓄水前后库区河流水质变化趋势。
- the variations of groundwater quality 水质演变
