bed of sand 中文意思是什麼

bed of sand 解釋
砂底盤
  • bed : n 1 床，床鋪；床位，鋪；（動物的）窩；〈比喻〉安樂窩，墳墓；床墊；睡眠；就宿。2 婚姻，夫婦關系。3...
  • of : OF ＝Old French 古法語。
  • sand : n 1 沙。2 〈 pl 〉 沙灘，沙洲，沙地，沙漠。3 〈 pl 〉 沙粒；（計時用的沙漏中的）細沙。4 光陰，時...
  1. By using the yearly data of water - sand that is gotten by a couple of adjacent hydrologic station in yellow river lower reaches, this paper makes use of kinds of math methods looking for the nonlinear disturbance among all of the factors, and introduces the thinking of analysis, logic, conclusion, inference, and random to nonlinear hydrologic forecasting. it realizes the valid approximation of the water level process in erodible - bed channel

    本文選擇黃河下游兩對相鄰水文站多年水沙資料，藉助多種數學方法尋找其中的非線性擾動項，將隨機數學中分析、邏輯、歸納、演繹、隨機的思考問題方式引入到非線性水文預報中，實現沖淤河道相應水位過程的有效擬合。
  2. At first, this paper analyzes the factors of water - sand influencing water level of yellow river and the feasibility just using the factors of water - sand to study water level, and collects the corresponding data ; secondly, because there are strong nonlinear relation in the corresponding data, by meticulous theory analysis, this paper integrates basic nonlinear analysis method, theory of random analysis, method of least squares and so on. it puts forward a method which can get the high accuracy simulation of the data, perfects the multi - factor analysis of variable ( over three factors ) of the statistic ; thirdly, it applies the method to the approximation of corresponding water level process which belong to the capacity of sand of middle - high and middle - low, and get the high - accuracy simulation about the typical nonlinear relation ; at last, this paper definitudes the main influence mode that the capacity of sand. it mainly unite with other factors to work on the water level in the yellow river lower reaches ; mor eover, this paper analyzes the difficult point and the direction of improvement to realize the accuracy forecasting of the flood level of erodible - bed channel

    首先，系統分析了影響黃河水位的水沙因素，及僅用水沙因素有效研究水位的可行性，並按變量對應思想採集它們的相應數據；其次，由於相應水位過程數據中含極強的非線性關系，本論文經細致的理論分析，將基本的非線性分析方法、統計建模方法、隨機分析理論、最小均方誤差原則等等數學理論及方法有機揉合，提出了能有效實現這類數據高精度擬合的分層篩選法，並改進了統計學中多因子（三個以上）方差分析法；再次，將這一方法用於黃河中高及中低含沙類洪水相應水位過程的擬合，實現了這一典型非線性關系的高精度擬合，各年汛期上下游相應洪水位過程的擬合誤差都較小；最後，明確黃河下游含沙量對水位的主要影響方式，即含沙量主要是與其它因素聯合對水位作用；另外分析了要實現變動河床洪水位過程準確預報的困難所在及改進方向。
  3. The weser estuary in germany, with broad beaches, lots of sand bars and many tributaries, is characterized with a great quantity of sediment transport due to tidal current ' s movement in the fluvial bed of fine sediment

    摘要德國威悉河口灘地寬廣，有無數的沙洲和許多大的分流，潮流在主要為細沙的沖積河床中運動，泥沙輸移量極大。
  4. Most of the soil had been washed away or buried in drift after the removal of the trees ; only where the streamlet ran down from the kettle a thick bed of moss and some ferns and little creeping bushes were still green among the sand

    在樹木被搬走以後，大部分土壤不是被雨水沖走就是埋成了堆，只在那細泉從鍋中溢出后形成的細流邊上，有一塊厚密的苗床，上面長著些苔蘚羊植物和蔓延在地面上的小灌木叢，仍然在這沙地上搖曳著一片碧綠。
  5. Moreover, combined with structural geology feature of beir depression, the reservoir growth feature of nantun & damoguaihe formation and the group of oil source bed, reservoir, caprock are analyzed, the distribution of favourable sand body are predicted

    同時，結合凹陷的構造地質特徵，對南屯組和大磨拐河組儲層的發育特徵及生儲蓋組合規律進行了研究，並對有利砂體的分佈范圍進行了預測。
  6. Whether sand can saltate from sand bed surface and quality of sand incipience are very important to the sand transport and the form of wind - blown - sand

    沙粒能否起動以及起動質量如何，如起動初速度、起動角度等參數都直接關繫到沙粒的輸運和風沙兩相流形成。
  7. Our research takes ptv technology to obtain data in the experimental set. the movement data of sand are aimed near the sand bed surface. out research demarcate the error of ptv method and provide a new way to research the dense wind - blown - sand flow

    本文使用ptv測量系統在實驗裝置中獲得了近沙面的沙粒運動信息，解決了一系列測量方法和圖像處理中的實際問題，標定了實驗中ptv技術測量數據的誤差。
  8. Measurement of liquid flow in open channels - sediment transport - guide to methods of sampling of sand - bed and cohesive - bed materials

    明渠流量測量.第10部分:泥沙挾帶.第10c節:砂床和粘性河床材料取樣方法導則
  9. Under experimental condition, the seeds of mosla chinensis maxim were pretreated with single and combined chemicals, and consequently indicated that : germination of such seeds in wet sand germinating bed was easier by kno3 ( 1. 0 % ) than that by other singgle chemical and combined chemicals

    摘要在試驗條件下，分別用幾種不同的試劑單獨或聯合對石香蕾種子進行預處理，結果表明：用質量分數1 . 0 %的kno3進行預處理的石香薷種子，在濕沙發芽床上萌發效果較其它不同濃度的試劑均要好，而幾種試劑聯合預處理對石香薷種子萌發的促進作用不明顯。
  10. The region and the earth surface across this road are mainly water above ground and run - off and the ground water is mostly made up of groundwater and perched water ; the river bed is more obvious ; the overbank is covered by medium sand and gravel ect

    路線所經地帶地面主要為地表水和徑流，地下水主要以潛水和上層滯水為主，河床較明顯，河灘覆蓋中砂、礫石等。地勢低洼地帶地表常年積水，影響路基穩定。
  11. The prospector panned out bits of sand and gravel scooped from the bed of a stream

    探礦者淘選從河床里挖出的少量含金泥沙和砂礫。
  12. Through choosing different diameter of sand granule, using fecl3 and pac as the coagulants, doing paralleled test through standard filtration column compared with referenced filtration columns ( the coarser and the finer sand granule used as filtration media separately ), the thesis investigates the correlation between the filtration behavior and the depth of the deep bed l, the diameter of the sand granule d

    本文採用不同粒徑的石英砂濾料，以fecl _ 3 、 pac作為混凝劑，通過進行標準濾池與參照濾池（分別裝填細濾料、粗濾料）的平行對比試驗，研究濾料粒徑改變后，濾池過濾特性與濾池深度l 、濾料粒徑d的相關關系。
  13. And also about the objective conditions for developing is given to the well consolidation technology with sand - packs in soft foundation treatment area and the consolidation technology with cement - mixed piles in transitional section of road and bridge areas, and the detailed introduction is also given about workmanship for filling works in subgrade body, for filling works in transitional sections of the subgrade, and for construction of base bed of the subgrade. in each part caution items in the construction and the relevant technical issues are summarized

    然後著重介紹了秦沈客運專線一般軟土地段地基處理袋裝砂井加固技術、路橋過渡段水泥攪拌樁加固技術，並對路基本體填築施工工藝、路基過渡段填築施工工藝，路基基床施工工藝也進行了詳細的介紹，在每一部分中對施工注意事項及有關技術問題進行了總結歸納。
  14. According to two - dimension flow continuity, momentum equations, suspended sand diffusion equations and two - phase flow bed sand motion equations, hydraulic - dynamics sediment accumulation mathematical model between two impounding dams was set up by adopting the methods of weighting and concentrating masses

    根據二維水流連續、運動方程、懸沙擴散方程和兩相流底沙運動方程，採用加權集中質量剖分方法，建立了蓄水兩壩間水動力、泥沙淤積數學模型。
  15. According to the idea of analytical hierarchy process, using structure element analytical method combining outcrop studies, for anatomizing in - layer short lap, to study in detail shengli oil field fluvial facies sand body internal building structure, the complete set reservoir bed can be divided in to single sand bed at highly asymmetrical longitudinal direction and described to microfacies and single sand body at flat

    摘要以層次分析思想為指導，應用結構要素分析法，結合露頭研究，解剖層內薄夾層並對砂體內部建築結構進行詳細研究，認為這樣就可以預測性地描繪出勝利油區河流相單砂體的幾何形態、連通性、以及儲層非均質性，準確判斷出砂體的成因類型，揭示了砂體內部建築結構特徵。
  16. A bed of loose sand mixed with water forming a soft, shifting mass that yields easily to pressure and tends to engulf any object resting on its surface

    流沙一種由鬆散的沙子和水混合成的沙層，形成一堆松軟、移動的物質，在壓力下很容易塌陷，並可吞沒置留在沙面上的任何物質
  17. Darby, s. e., and thorne, c. r. numerical simulation of widening and bed deformation of straight sand - bed rivers ii : model evaluation, journal of hydraulic engineeting, vol. 122, no. 4, 1996, p194 202

    王新宏。沖積河道縱向沖淤和橫向變形數值模擬研究及應用。西安理工大學博士論文， 2000年。
  18. Gas - solid two - phase flow is existed widely in multiphase flow system, for example, desert sand in nature, fuel transportation in field of chemical industry, metallurgy, energy sources and foodstuff, and so on, as well as pneumatic conveying and dust treatment of materiel in bulk ( i. e. sands, corn and plastic granula etc. ). in addition, sulfureted bed, whirlwind dust - exhaustion, sedimentation room and filtration process are involved with gas - solid two - phase flow

    氣固兩相流在多相流體系中普遍存在，例如，自然界的大漠揚沙，化工、冶金、能源和糧食等領域的燃料配送，散裝物料（如沙子、穀物、塑料粒）的氣力輸送和粉塵處理等，硫化床、旋風除塵、沉降室及過濾過程中也會涉及到氣固兩相流。
  19. Due to distribution of sand body and very variety of reservoir physical characteristics and serious nonuniformity in the upper palaeozoic gas pool at the sulige gas field, during the course of gas and oil field development, it is urgent problem about how to predict precisionly the distribution of high permeable and thick reservoir bed, precisely choose the place of productive well

    蘇里格氣田上古氣藏的砂體分佈、儲層物性變化很大，非均質性嚴重，因此，在開發過程中如何準確預測高滲厚儲層的分佈、準確選定開發井位，是高效開發蘇里格氣田急待解決的問題。
  20. The extreme effects of sand mining on local deformation of riverbed and evolution of river stretch in typical river sections such as straight river section, river bend and river fork are experimentally studied in micro - scale loose bed hydraulic model

    摘要採用微尺度動床河工模型試驗的方法研究了在順直、彎道與分汊等典型河道不同部位進行大規模采砂對河床局部變形及對河段變形的極限影響。
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