quality of river water 中文意思是什麼

quality of river water 解釋
河水質量
  • quality : n 1 質，質量；性質，特質；品質，品位。2 優質，美質，優點。3 才能，能力，技能，素養。4 品種。5 身...
  • of : OF ＝Old French 古法語。
  • river : n 1 河，江。 Rriver Thames 或 the R Thames 泰晤士河； the Hudson R 〈美國〉哈得孫河。 the Rriver ...
  • water : n 1 水；雨水；露；〈常作 pl 〉 礦泉，溫泉；藥水。2 〈常 pl 〉水體；水域；水道；海；湖；河；海域；...
  1. The pollution problems of the rivers and streams in that region have accordingly improved considerably in the past decade. however, as the base flow of local rivers and streams is generally small, their assimilative capacity is therefore low. this, coupled with the continued development and hence population growth in the river catchments, as well as the lack of maintenance of many private septic tank systems, has caused the water quality of some rivers and streams in the northwest new territories to remain unsatisfactory

    而溪流的污染情況在過去的十年間亦因此而有所改善，但由於本地河溪的流速相當慢，河流的自凈能力相對偏低，而河溪的周邊不斷發展，人口持續增加，加上部分私人的化糞池系統欠缺打理，未能有效運作，所以新界西北仍有部份河溪水質未如理想。
  2. Application of multipolar fuzzy recognition model to river water quality assessment

    多級模糊模式識別方法用於河流水質評價
  3. Apart from the days when the stream was affected by external factors like rainfall, fishing and agricultural activities, the quality of water discharged to kam tin river complies with the epd s standards

    除了上游因外在因素如暴雨、養魚及農業活動而水質變差的個別日子外，排入錦田河的廢水水質一直合符環保署的要求。
  4. Abstract : coagulations of different coagulants are researched for the raw water abstracted from xijiang river in guangdong province attempting to optimize the application of coagulant agents and to enhance the coagulation process, so as to reduce the expenses of coagulation operation and to improve the quality of the output water

    文摘:通過比較不同混凝劑對西江水的混凝效果，來優化混凝劑的使用方法，達到提高混凝效率、減少混凝成本和提高出水水質的目的。
  5. Second, based on the characteristic of the receiving water studied in this paper, develope a dynamic one - dimension water quality model for nanbei river in zhangcha town of foshan city, and develope a program of water quality model based fortran powerstation. and then, calculate the concentration of codcr in receiving water using the simulation results of swmm and analyze the effect on the environment of receiving water by intercepting ratio. at last, the construction investment and operational and administrative expenses of intercepting trunk sewer 、 pumping station and sewage farm is calculated and the relation between them is discussed

    其次，本文根據研究區受納水體的特點，建立了佛山市張槎鎮南北大涌的一維非穩態水質模型，相應地開發了基於fortranpowerstation平臺的水質模型計算程序，並在swmm模型模擬結果的基礎上，利用本文編制的水質模型程序計算了不同截流倍數時南北大涌codcr濃度的時空變化過程，分析了截流倍數對河涌水環境質量的影響。
  6. Under the worse situation of worldwide shortage of fresh water, china, as one of the 13 countries with lowest per capita occupancy in water resources, has 330 cities are short of water ; an average of 26. 68 million hectares farmland in drought annually but also a loss of billions of rmb properties due to the floodwater every year ; 82 % rivers and lakes suffered from pollution in different degree ; 2800 km river without any aquatic ; 25, 000km ' s water unqualified by fishery water quality standard

    在全球淡水資源日益緊張的形勢下，我國作為世界人均水資源13個貧困國家之一，有330個缺水城市，每年平均有4億畝農田受旱，每年洪災要造成數以千億的經濟損失，有82 %的江河、湖泊受到不同程度的污染， 2800多公里的河段魚蝦基本絕跡， 2 . 5萬公里的河流水質超過漁業水質標準。
  7. Comprehensive assessment of fresh water quality of fish reproduction spot in the dongta river, guiping, guangxi

    廣西桂平東塔河段產卵場水質綜合評價
  8. Based on the analyses of water quality monitoring data of over 120 hydrometric stations in the yangtze river system during the last 30 years, the effect of lithology and climate rainfall on major ion chemistry of the river water has been studied by means of statistical approaches such as principal component analysis and correlation analysis

    在分析長江流域120餘水文站點近30年水質監測數據的基礎上，運用主成分分析相關分析等數理統計方法研究巖性和氣候條件降水量對長江水系河水主要離子化學的影響。
  9. It is necessary to know the conditions of river water quality in time in order to control and prevent the water pollutions in rivers

    摘要及時準確地了解河流水質狀況能更好地對河流水體污染進行控制和治理。
  10. Analyzing of water quality of weihe river in baoji

    渭河寶雞段水環境質量綜合評價分析
  11. To improve the water quality in the estuary, both sides agree to enhance exchange regarding the protection of and co - operation on the water environment so as to enable both sides to implement proposals for protecting the water quality of the pearl river delta region and to formulate a management plan for the region

    為了改善珠江河口一帶的水質，雙方同意加強水環境保護與合作的交流，以便雙方可落實加強有關珠江三角洲水質保護的建議，以期為珠江三角洲共同制定一套水質管理方案。
  12. In this paper, river water quality prediction is integrated with water pollution control measures. two parameters, water environmental capacity and pollution index are selected for pollution control measures. the objective is achieved after the development of simulation model using one - dimensional advection dispersion equation. the model algorithm and computer program is an improvement over the existing water quality models, since the model solution involves four point implicit upwind schemes for water quality prediction and pollution control measures at each grid point. model simulation results the assessment of water environmental capacity that yield the acceptable and realistic pollutants concentration in order to maintain water quality objectives. the pollution and overall pollution index of the river is suggested for integrating number of contaminants variables into one index. study provides the mathematical and scientific procedure for water quality management. the new approach is helpful for the water pollution control and to study the impacts of waste effluents on the river system for strategic planning purposes

    本文將水質預測及水污染控制措施有機地結合，選取水環境容量和污染指數作為水污染控制的參數.這樣，一維對流-擴散水質方程的求解除就是實現本研究目的的關鍵.本研究採用的模型在現有的水質模型基礎上有所改進，因為其採用四點隱格式對水質進行預測，推求可接納污染物的環境容量值及為保證水質而限定的污染物濃度值，從而制定相應的水污染控制措施.為整體考慮各種污染物的情況，建議採用河流的污染指數進而推求綜合污染指數.總之，本研究為水質保護提供了科學的計算方法，該法對水污染控制及污水對河道水質的影響是實用有效的
  13. Prediction of river water quality based on gray dynamic model group

    基於灰色動態模型群法的河流水質預測研究
  14. Effects of polluted weihe river to the quality of pumped water near the river in yang - ling area

    渭河水污染對楊凌區擬建水源地水質影響分析
  15. Evolution of river water quality and its response to environment acidification in dongliao basin

    東遼河水質演化及其對環境酸化的響應
  16. Based on comprehensive investigation to hydrology present situation, quantity and distribution of pollutional sources, drainage situation of waste water and water ' s pollution matters, location distribution of drainage of waste water, quality of river water and underground water, drainage pipe system and environmental hygiene in eastern city - guarding river valley, the author exhaustively analyzes the cause of exsiting environmental problems and provides suggestions in comprehensive administration of eastern city - guarding river

    摘要在對東護城河流域水文現狀、污染源數量及分佈、廢水及污染物排放情況、排污口分佈、河流水質、地下水水質、流域內排水管網和環境衛生狀況進行認真調查的基礎上，對其存在的環境問題及其成因進行了詳細分析，並提出了具體的流域綜合治理建議。
  17. To use a method of statistical analysis to describe the trend of river water quality change in recent 50 years

    用統計分析的方法描繪河水水質近50年的變化趨勢。
  18. A. summary of river water quality monitoring stations and sampling frequencies in 2005

    A .二零零五年河溪水質監測站及采樣頻率總結
  19. Impacts of the construction of key water conservancy projects in the yangtze river and sea level rise on water quality of shanghai water intake

    三峽與南水北調工程建設及海平面上升對上海城市供水水質的可能影響
  20. Based on the unascertained characteristic of river water quality system, the parameters of water quality model are defined as the unascertained numbers by using unascertained mathematics theory

    摘要基於水質系統的未確知性，運用未確知理論將瞬時排污情形下河流水質模型參數定義為未確知數。
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