您要查找的是不是:
- The developed index system includes the water quality assessment standard, t he calculation method and the water qual ity meaning of index. 评价指数系统包括评价依据、综合指数的计算以及评价结果的水质含义和报告方法等。
- Every day the laboratory collects samples to monitor the water quality in Ago Bay. 每天,实验室都要在AGOBAY收集样品,监测水质。
- The Application of the Fuzzy Theory to the Water Quality Assessment in Yangtse River Near Ma-anshan 模糊集理论在长江马鞍山段水质评价中的应用
- the water quality assessment 水质评价
- Mathematical models are frequently used to assess the water quality impact of major development activities in Hong Kong. 环保署经常使用数学模型,评估香港大型发展工程对水质的影响。
- The water quality of the offshore marine areas tended to improve. 近岸海域海水水质呈改善趋势。
- The water quality remains the same as that in the previous year. 与上年相比,水质持平。
- Using fuzzy comprehensive judgment,the content of oxygen,hypermanganate and ammonia nitrogen in water are analysed in the paper,then a model of water quality assessment is gained. 文章对问题深入分析,采用模糊综合评判方法,对水中溶解氧,高锰酸盐和氨氮含量进行分析,得到对水质综合评价的数学模型。
- XU Zuxin.Single factor water quality identification index for environmental quality assessment of surface water [J].Journal of Tongji University:Natural Science,2005,33 (3):321. [5]徐祖信.;我国河流单因子水质标识指数评价方法研究[J]
- At the present,the water quality of Lake Biwa becomes better. 目前 ;该湖水质呈现转好趋势 .
- The sediment and its influence on water environment cause a series of problems and difficulties in the water environmental quality assessment for sediment-laden water of the Yellow River. 黄河多泥沙水体中存在的泥沙及其对水环境造成的影响给河流水环境质量评价带来了一系列特有的问题和困难。
- Compared with the previous year,the water quality remains almost the same. 与上年相比,水质基本持平。
- The water quality of the stream used to be excellent and crystal clear. 以往的东涌河水质优良,河水清澈。
- A journalist from yunnan province paid attention to the water quality. 一位来自云南省的记者关注水质。
- Compared with the previous year, the water quality remained basically the same. 与上年相比,水质基本持平。
- Compared with the previous year, the water quality remains almost the same. 与上年相比,水质基本持平。
- Eutrophication is most important to the water quality of lake and reservoir. 水体富营养化是湖泊和水库面临的主要水质问题。
- The water quality in Dagujia River basin was assessed by using the PCA method. 摘要采用主成分分析法(PCA),对大沽夹河流域水质进行了定量化综合评价。
- The accuracy of the model is examined based on the data of water quality compared with conventional models. The results show that the AdaBoost-NN model for water quality assessment is more objective and reasonable compared with the traditional methods. 利用浊漳河水质监测数据比较AdaBoost-NN模型与传统ANN法和内梅罗综合指数法评价模型的差异;结果表明:AdaBoost-NN水质评价模型有效弥补了BP模型自身的缺陷;评价准确度更高;结果更加客观、合理.
- Under systematic view, a comprehensive evaluation model for water quality was established based on variable fuzzy sets method, and the water quality evaluation was converted from the qualitative assessment to a quantitative one. 摘要基于立足全局的系统观,应用模糊可变集合,建立水质评价模型,把水质评价由定性转化为定量。