輸沙率 的英文怎麼說

中文拼音 [shūshālǜ]
輸沙率 英文
load discharge ratio
  • 輸 : Ⅰ動詞1 （運輸; 運送） transport; convey 2 [書面語] （捐獻） contribute money; donate 3 （失敗） l...
  • 沙 : 沙動詞[方言] （搖動以清除雜物） shake
  • 率 : 率名詞（比值） rate; ratio; proportion
  1. The scale effects due to unsimilar bed risistance is discussed in detail, and the correct way of scour depth is supposed. at last, a new transport rate formulas of uniform or nonuniform bed load is given

    本文還對由於阻力不相似而引起的比尺效應進行了較詳細的討論，從理論上給出了沖刷深度比尺效應的修正方法及新的均勻、非均勻推移質輸沙率的計算公式。
  2. Gilbert speculates that the reason for this increase of transport rate is the reduction of friction losses by the presence of fine suspended material in the flow.

    吉爾勃特認為輸沙率增加的理由，是水流中存在的細懸移泥沙將減少阻力損失。
  3. The theory of minimum entropy production or minimum rate of energy dissipation shows that a river is stable when it is in a relative equilibrium condition. ( 3 ) the river facies formulas of alluvial river have been developed using the theory of minimum rate of energy dissipation together with flow continuity and motion equations, suspended load transport or bed load transport equation. ( 4 ) the causes of the river patterns are explained using the theory of minimum rate of energy dissipation

    （ 3 ）基於最小能耗率原理，以水流能耗率作為目標函數，以水流連續方程、水流運動方程及懸移質挾沙力公式或推移質輸沙率公式作為約束條件，通過對目標函數求條件極值，分別推導出以懸移質造床為主的顯式河相關系式和以推移質造床為主的顯式河相關系式。
  4. 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。
  5. The results show that compared to salix psammophila barrier, ecomat cover does decrease surface sand transportation rate ( sstr ), increase surface soil nutrient, and enhance growth of platycladus orientalia to the extent, undoubtedly ecomat is one of surface cover materials for sand - fixation and revegetation ; compared to two other ecomat part - cover types ( banded and chessboard ), the all - cover type can also decrease sstr, increase surface soil nutrient significantly, growth condition of platycladus orientalia, however, is not good as expected, which may attributes to lower infiltration rate of slight rainfall ; as for two part - cover types, chessboard type is better than banded type in increasing of sstr and enhancement of platycladus orientalia growth

    研究結果表明，與沙柳沙障相比，生態墊確實可以降低近地表的輸沙率，提高生態墊下土壤的養分含量，一定程度上提高檸條的地徑和高度，可見生態墊是一種很好的促進流沙固定和植被恢復的地表覆蓋材料；與其它兩種生態墊鋪設方式（品字狀和帶狀）相比，全鋪可以顯著降低近地表的輸沙率，提高其下土壤的養分含量，但檸條的生長狀況卻略差，這可能與全鋪降低了小雨入滲的可能性有關；就兩種部分鋪設的方式而言，無論從降低近地表的輸沙率還是促進檸條的生長土來看，品字狀都明顯優于帶狀。
  6. 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。
  7. Abstract : variations of flow pattern, flow velocity in deep poo l and side bar, mainstream thread, and water surface, caused by excavation project, are investigated by two - dimensional mathematical model in an orthogonal curvili near coordinate system. the change of bed - load transport rate, and redeposition r ate are predicted. the influences of the excavation project on navigation are ana lyzed. grid - type and flat - type excavation alternatives are proposed and discuss ed

    文摘:採用正交曲線坐標系下的河道平面二維數學模型，研究了嘉陵江何家磧邊灘采砂后河道流勢、流態、灘槽流速、主流位置、水面高程及比降的變化規律，預測了采砂方案完成後卵石推移質輸沙率變化及其對航道的影響，並對格形開挖和平整開挖方案進行了比較分析
  8. Finally the formula of unit sediment rate of density flow in xiaolangdi reservoir has been pointed out and the data of other reservoirs has been verified

    最後，給出了小浪底水庫異重流單寬輸沙率公式，並得到其它水庫資料驗證。
  9. Dalian changxing island sea area coast silt discharge quantitative evaluation and qualitative analysis

    大連長興島海域沿岸輸沙率的定量計算及定性分析
  10. The following parts are the research results : the temporal variation character of sediment yields of the experimental watershed model. the average sediment transport ratio of every rainfall takes on obvious period character with the developing process of the experimental watershed model. early developing period ( from the first rainfall to the fifth rainfall ), active developing period ( from the 6th rainfall to the 18th rainfall ) and stable developing period ( from the 19th rainfall to the 25th rainfall ) are defined

    流域模型侵蝕產沙時序變化特徵次降雨平均輸沙率隨流域模型發育過程表現出明顯的時段性，即發育初期時段（第一場到第五場降雨） 、發育活躍時段（第六場到第十八場降雨）和發育相對穩定時段（第十九場到第二十五場降雨） 。
  11. 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。
  12. 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。
  13. Suspended sediment has three transport modes, and the relationship between tidal discharge and sediment discharge is also studied

    懸沙運動模式與水流基本一致，也存在三種不同形式的懸沙環流輸移模式，並分析了潮流量與輸沙率之間的關系。
  14. Finally, bedload transport rate of dujiangyan was computed with several representative formulas

    分別用幾種有代表性的輸沙率公式計算了都江堰河段的推移質輸沙率。
  15. 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。
  16. 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。
  17. Based on 9 years ' field data of bed - load transport and the corresponding hydraulic parameters at the erwangmiao hydrology station on dujiangyan river, 6 formulae for the prediction of the sediment transport are analyzed

    摘要以都江堰二王廟水文站9年實測的卵石推移質輸沙率資料和對應的水力參數為基礎，選用6個有代表性的公式進行了分析計算和對比。
  18. 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。
  19. In this paper, gravel characteristics and variety along the river were studied with digital image technology ; variety of grain sizes distribution of the river bed along jinmahe section in minjian river was analyzed ; several representative formulas of bedload transport rate were proved according to the field data of dujiangyan

    本文採用數字圖象技術研究了卵石顆粒的幾何特徵及沿程變化；分析了岷江金馬河河段河床質級配的沿程變化；根據都江堰的輸沙率資料論證了幾家有代表性的推移質輸沙率公式的實用性。
  20. It is concluded that the critical velocity could be calculated by sharmov formula and the percentage of immobile particles of the bed should be considered for calculating the transport rate

    結果表明，可以採用沙莫夫公式計算起動流速，計算輸沙率應考慮床面不動顆粒所佔比例的影響。
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