stream runoff 中文意思是什麼
stream runoff
解釋
河川徑流-
This paper presents a forecasting model of runoff to wuyandong subterranean stream system by bp ann based on the data of precipitation and flux in luota, west hunan
摘要採用湖南洛塔地區屋檐洞地下河系統降水徑流資料訓練bp人工神經網路，建立了該系統的徑流預測模型。 -
Contribution percentages about precipitation to runoff were calculated to divide rapid flow and slow flow in the model, the proportion of them of wuyandong subterranean stream system is 2 to 3
通過降水對徑流的貢獻率進行快速流和慢速流的劃分，屋檐洞地下河系統的快速流與慢速流比例接近2 ： 3 。 -
The results indicated that with the change of water and sand condition and the altitude of tongguan and the development of the industry and agriculture in recent decades, the water environment of wei river had changed largely, which were shown as follow : annual runoff and seasonal flood decreased sharply ; water stream of large discharge decreased and the range of runoff decreased greatly ; sediment load per year decreased generally, sediment concentration of water increased, and the sand silting up was serious ; water channel swung and shrank, and water regime deteriorated ; frequencies of big floods decreased obviously, and hyper concentrated flood increased obviously ; water levels of the same runoff rose universally, and the frequencies of the floods increased and aggravated ; water pollution was very serious
結果表明，近期隨著水沙條件、潼關高程等的變化及工農業的發展，渭河的水環境發生了巨大變化，表現在年水量及汛期水量銳減；大流量級水流出現次數減少，水量減少幅度大；年輸沙量總體減少，河水含沙量增大，泥沙淤積嚴重；河道向擺動型發展，河道萎縮，河勢惡化；大洪水發生的次數顯著減少，高含沙小洪水明顯增多；同流量洪水位普遍抬高，洪災發生次數增加，洪災加重；水質污染極為嚴重。 -
Complicated hydrologic and geographic conditions, and the large scale of the xiaolangdi hydraulic project on the yellow river are introduced briefly. three desilting tunnels are designed to meet the requirements of flood control, sediment discharge and runoff regulation. according to the performance requirements of desilting tunnels, the tunnel lining down - stream of the grouting curtain is designed to be post - tensional prestressed lining. on the basis of investigation and research, experiements and analysis, the unbonded prestressing system is used. it is the largest unbonded prestressed tunnel lining project in the world, and the first one in china
簡介黃河小浪底水利樞紐復雜的水文、地質條件以及龐大的工程規模.該樞紐設計有3條排沙洞，擔負著泄洪、排沙、調節徑流和保證進水口不被泥沙淤堵的任務.根據排沙洞的水庫運用要求，灌漿帷幕下游排沙洞洞身段設計為混凝土后張預應力隧洞.通過大量的調研、試驗、分析論證，在施工前確定該預應力方案選用無粘結預應力系統，成為目前世界上規模最大的無粘結預應力隧洞襯砌工程，在國內尚屬首例 -
Our site inspection near shek mum kap at the midstream section of the tung chung stream on 14 august 2006 revealed significant sediment runoff from upstream water. virtually no fish and insects were observed in the stream
本會於2006年8月14日在鄰近東涌河中游段的石門甲進行實地考察時，發現大量沉積物從上游沖刷而下，本會職員更幾乎未能在該河段中找到魚類和昆蟲。 -
Increase in runoff in the stream not only will cause a direct impact to the stream biotic communities, it may also affect the water quality in tung chung bay
沉積物增加不僅直接影響河道的生物群落，同時亦會影響東涌灣的水質。 -
Since the early nineties last century, machine learning techniques such as artificial neural networks ( ann ) have been attempted in flood forecast areas, such as rainfall - runoff modeling and stream flow forecasting, with some valuable experiences achieved. this paper presents several precise, reliable and practical flood forecast models based on some new style learning machines. their performances were valued in case studies
本文結合機器學習技術，從尋找易用的、準確的、可靠的、實用性強的洪水預報方法的角度出發，建立了多種基於新型的學習機器的洪水預報模型，並通過這些模型在實例中的表現，對它們的性能進行了評價，提出了幾種基於學習機器的洪水預報解決方案。 -
It could be seen that the influence of human activity on stream runoff is very obvious. the quantity of downstream flow depends on precipitation over a catchment and withdrawal from the upstream
結果表明，本文研究的流域老哈河流域地表水資源減少的趨勢是非常明顯的，並隨著年代的增長在不斷加劇。
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