sand bed 中文意思是什麼
sand bed
解釋
砂層；（過濾池）砂床-
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。 -
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。 -
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。 -
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。 -
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。 -
This factory product versatility, is suitable on the automobile seatcover, the seat cushion, the bed the thing, the plastic chair, thedisposable slipper, the traveling hat, the sand beach mat handbag boxpackage, the handicraft and so on
本廠產品用途廣泛，適用於汽車座套、座墊、床上用品、塑料座椅、一次性拖鞋、旅遊帽、沙灘席手袋箱包、工藝品等。 -
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。 -
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。 -
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 -
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。 -
Based on the moveable - bed model tests and some relative studies, it is found that the proposal reservoir for the hongshiyan hydropower station will be a heavy deposit reservoir, its sand - flushing sluice could not effectively de - silt and serious hidden - troubles exist in its diversion tunnel
摘要待建的紅石巖水電站水庫屬嚴重淤沙型水庫，通過動床水工模型試驗和有關研究分析發現，其沖沙閘排沙效果不理想，引水隧洞存在進沙嚴重的隱患。 -
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。 -
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。 -
In the canal with sand moving balance and stable bed, may keep the current status ; for the sediment canal which seriously reduced discharge, may properly clean sediment ; for the seriously scoured canal, such as curved canal, should lining the canal
對于輸沙達到平衡、河床比較穩定又達到輸水能力的渠段，可保持現狀；對淤積比較嚴重又影響輸水能力的局部渠道，可進行適當疏浚清淤；對淘刷比較嚴重的彎道凹岸進行工程護砌。 -
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。 -
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。 -
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。 -
6, clustering analyzing method has been used, and guan 3 - 6 sand bed sets have been divided into 5 fluid units quantificationally. the spacing distribution of the fluid units and their controlling function to the residual oil distribution has been descripted
6 、應用聚類分析方法，定量地將南區館3一6砂層組分為五種流動單元，並描述了各流動單元的空間分佈及對剩餘油分佈的控製作用。 -
However, there are much silt, silty clay, and silt - and - sand bed in the highway grounds of many provinces and cities
我國許多省市的公路地基中大量存在著淤泥、淤泥質粘土、淤泥混砂層。 -
However, there are much silt, silt clay, and silt - and - sand bed in the highway grounds of many provinces and cities. if expressways are built on these grounds without improvement or managed improvement, the quality of roads will fall even destroy
我國許多省市的公路地基中大量存在著淤泥、淤泥質粘土、淤泥混砂層，若不經過處理或處理不當，會引起道路質量的降低甚至破壞，因此，必須加強高速公路軟基處理的研究。
分享友人