sediment transport rate 中文意思是什麼
sediment transport rate
解釋
泥沙輸移率-
However, according to ann ' s theory, making use of visual basic development tool, friendly - interface single output three layers " artificial neural network generator base on improved bp algorithm has been developed by the author, and after constructing the model, the value of d _ ( cmax ), finally the gross bed - load transport rate of non - uniform sediment with a wide distribution in flume experiment of stead sediment transportation have been forecasted
筆者採用的途徑則是根據人工神經網路理論，利用vb開發出界面友好、基於改進bp演算法的多輸入單輸出三層神經網路生成器軟體，並採用該生成器建模，對平衡輸沙狀態下的水槽輸沙試驗的d _ （ cmax ）和總輸沙率進行預測計算。 -
An expression is derived using basical concepts of physics ( i. e. mass conservation ), to define the relationship between sediment transport rate and vertical flux of sediment to the seabed
從基本的物理概念和物質守恆定律導出了海底沉積物通量的計算表達式，應用該式取得了與實際海域相符的海底沖淤分布圖。 -
The application study of improved bp algorithm in sediment science - using two set of experiment data mentioned above, the value of d _ ( cmax ) and gross bed - load transport rate in non - uniform sediment with a wide distribution in flume experiment of stead sediment transportation have been forecasted by ann generator
改進bp演算法在泥沙科學中的應用研究?將收集整理后的兩次水槽試驗實測資料作為數據來源，利用生成器生成網路對水槽平衡輸沙試驗中的最大起動粒徑和總輸沙率進行預測。 -
The distributing patterns of the eulerian residual currents of the four major tide constituents ( i. e. m2, s2, ol and kl ) imply that fine - grained sediment transport over the central mud of the northern yellow sea is weak. the eulerian residual currents of kl and s2 respectively form an anti - clockwise eddy near the coastal mud - deposit area of northern shandong peninsula, which may increase the deposition rate of mud
各分潮歐拉余流總的分佈趨勢表明北黃海中部泥區細顆粒沉積物輸運的量值很小， k1和s2分潮歐拉余流各自在山東半島北側近岸泥質區形成的順時針渦漩可能促進了該處的泥質沉積。 -
Ann is a adaptive and non - linear dynamic system made from superposition of many simple components which we call neuron. the question for computation of d _ ( cmax ) belongs to incipient motion of sediment in essence, which is the same question with two different sides, because computation of critical condition ( including critical velocity critical shear stress critical power ) for a grain size under a bed - load condition is equal to computation of a grain size during incipient motion under the bed - load condition and the water flow condition given before. and computation of gross bed - load transport rate has great relationship with standard of incipient motion
對于d _ （ cmax ）的推求，在本質上還是泥沙的起動問題，因為尋求某種床沙條件下某級泥沙的起動條件（如起動流速、起動切應力、起動功率）和尋求某種水流和床沙條件下的起動粒徑是同一問題的兩個方面而已；而對于推移質總輸沙率推求也和泥沙起動問題中的起動標準選擇緊密相關。 -
Computing the maximal grain size during incipient motion d _ ( cmax ) and gross bed - load transport rate in non - uniform sediment with a wide distribution are two important indexes for description its transport law, and it is also a core question for discussion in non - uniform sediment research
寬級配非均勻沙最大起動粒徑d _ （ cmax ）和推移質總輸沙率的推求是刻畫非均勻沙推移質輸移規律的兩個重要指標，也是研究非均勻沙運動規律的核心課題之一。 -
The measured data show that the bedload sediment transport rate is related more closely to the effective stream power within the bed - surface layer than to the river stream power
實測資料表明，推移質輸沙率與床面層內有效水流功率有良好的相關性，且高於推移質輸沙率與水流功率的相關性。 -
Based on the relationship between energy and flow within the bed - surface layer, a relationship between the bedload sediment transport rate and effective stream power within the bed - surface layer is derived
摘要基於床面層內的水流能量關系，推導了推移質輸沙率與床面層內有效水流功率的關系式。 -
Verification results of more than 2800 runs of channel experiment data and field data show that this formula has good applicability and high accuracy, and is better than the other formulae for bedload sediment transport rate based on the stream power
經2800組試驗資料與天然河流資料的檢驗表明，該關系式的適應性良好，計算精度較高，並優于同類型的基於水流功率的推移質輸沙率公式。 -
This method is better than the traditional method that relates the divergence of sediment transport rate to the deposition rate. the output of the tidal modelling reaches the required precision according to a comparison between the calculated tidal amplitudes / phases and the observed ones at 42 coastal tide gauge stations
潮汐潮流的模擬計算結果與沿岸42個潮汐測站的實測值結果對比達到了精度的要求，同時，計算得到的各分潮同潮圖與實測結果相符。 -
In this dissertation, on the basis of comprehensive review of the study achievements on sediment transport, we get the fact that most of formula in sediment incipient motion and bed - load transport rate are established by classical regression analysis model, i. e. firstly establishing the formula according to related sediment transport theory, secondly computation for regression coefficients in formula by using field or laboratory experiment data
故本文在回顧並總結泥沙輸移研究成果的基礎上，指出大多數泥沙起動公式和輸沙率公式的推求是採用傳統回歸模型，即先根據輸沙理論定出計算公式，再用實測資料或試驗數據率定公式系數。 -
The main contents are as follows : section - of theory of sediment transportation - on the basis of comprehensive review of the study achievements on sediment transport, pros and cons in using classical regression model based on lms during establishing formula in sediment incipient motion and bed - load transport rate ; experiment data in non - uniform sediment with a wide distribution in flume experiment of stead sediment transportation are been collected and coordinated
本文的主要內容包括：泥沙輸移理論部分：對前人的相關泥沙起動輸移研究結果總結性的回顧，分析了採用最小二乘法的傳統回歸模型在泥沙起動公式和輸沙率公式處理中的四川大學碩士學位論文人工神經網路理論及其在泥沙科學中的應用研究優點和缺點:收集並整理了兩組平衡狀態下的輸沙試驗資料。 -
Topography fractal dimension related with process of development of watershed physiognomy and represented degree of watershed development, v ) sediment yield intensity of watershed model reflected erosion characteristic of watershed model in different development phase. simulating experiment indicated that sediment yield intensity took on the trend that they changed from small to big then decreased gradually. the relationship of average sediment transport rate and sediment yield rate per mm rainfall with topography fractal demension is expressed by gaussian model and this model is similar with relationship between volume and surface area
（ 5 ）流域模型產沙強度的變化反映了流域模型在不同發育階段的侵蝕特徵，模擬試驗研究結果表明：在整個流域模型地貌地貌的發育過程中，其產沙強度呈現由小到大，然後又逐漸減小的總體趨勢，流域模型單位降雨產沙率及平均輸沙率與地形分維數表現為gaussian模型關系，其關系形式與結論3中相對體積和表面積之間關系相似，進一步說明了以地形分維數表達地形變化的合理性。 -
The results show that there is a power function relation between rainfall intensity and runoff duration and a linear relation between rainfall intensity and sediment transport rate of unit width, and we find the experienced coefficient of above relations through regression analysis
結果表明，產流時間和降雨強度之間存在冪函數關系，與單寬輸沙率之間存在線性關系，單寬輸沙率與單寬流量之間亦存在線性關系。
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