河床質 的英文怎麼說

中文拼音 [héchuángzhí]
河床質 英文
bed load
  • 河 : 1 （天然的和人工的大水道） river 2 （指銀河系） the milky way system; the galaxy 3 （特指黃河） t...
  • 床 : i 名1 （供人睡覺的傢具） bed; couch 2 （像床的器具、地面） something shaped like a bed Ⅱ量詞（用...
  • 質 : Ⅰ名詞1 （性質; 本質） nature; character; essence 2 （質量） quality 3 （物質） matter; substance;...
  • 河床 : riverbed; bed; poised river; [英方] waterstead; cauce
  1. Bed load particles move spasmodically, perhaps at long intervals, and are at rest on the stream bed most of the time.

    推移質顆粒多半作間歇運動，而大部分時間則停歇在河床上。
  2. Bedload is the main factor resulting in bed form for few sands of suspend load in the river bed

    河床質中幾乎沒有懸移質顆粒，對河床演變起主要作用的是推移質泥沙。
  3. As the sampler is dragged along the bed, it collects a sample from the top layer of bed material.

    取樣器沿河底拖動，收取表層河床質。
  4. Bed material samplers, as first developed, may be divided into three types.

    最初的河床質取樣器有三種類型。
  5. Many geological and hydrological factors of the river section, where the yellow river water intake engineering is laid out, such as the capacity of the reservoirs along the river section upstream and downstream, the rate of the flow discharge, the erosion and silt of the watercourse, the form of the riverbed and the water current, ice tuck, the convergence of the upstream branches of the river section, flood crest, sand crest size, the capacity for flood discharge of the watercourse, the effect of flood control structure around and the impacts on surrounding environment and the third person " s legitimate rights and interests, should be considered

    黃河取水工程的布設要考慮工程所處河段的地質水文等諸多因素。如該河段上下游水庫的庫容，泄水流量、河道沖刷、淤積、河床形態、水流形態、冰塞、河段上游的支流匯入、洪峰、沙峰的大小、河道行洪能力的大小、周圍防洪工程的影響及對周圍環境和第三人合法權益的影響等等。
  6. Based on the topographic features and data of sediment particle size of bed load at the fluctuating backwater reach of liujiaxia reservoir, the streamwise variation and variation process of median diameter of bed load during silting and scouring periods of the fluctuating backwater reach are analyzed, and it can be seen that the turning point for the sediment diameter variation from coarse to fine is located at the outlet of shigou gorge of the fluctuating backwater reach

    摘要根據劉家峽水庫變動回水區的河段地形特徵和歷年河床質泥沙粒徑級配資料，分析了變動回水區河段淤積和沖刷時，河床質泥沙中值粒徑的沿程變化和歷年河床質泥沙中值粒徑變化過程，並指出粒徑分佈由粗變細的轉折點在變動回水區寺溝峽峽口處。
  7. Excavating riverbeds in one channel may not only reduce the velocity area in some areas but also increase the velocity in other areas by increasing flow rate in this channel without correspondent changes in riverbeds of rocky rapids. in result, the velocity in waterway may be increased instead of be reduced, the flow condition may also be deteriorated. thus, which branch should be excavated and how to excavate in improving the flow condition of the branch should be further explored

    但在分汊河道內，情況較為復雜，在一汊河道內採取開挖措施后，雖然其過水斷面有所增加，局部流速相應降低，但是由於工程后，汊道的分流比將會相應變化，而石質河床一般無法通過沖淤變化以適應水流條件的改變，因此，航道內工程處的流速可能降低，也可能不降反而有所增加，惡化了航道的水流條件。
  8. The analyzed results are as follows : the late 1960 ' s cutoff of riverbends increased both the runoff amount and the sediment transport amount of the lower reach of jingjiang river, while the sediment deposition decreased in the lkngting lake area ; after the mid 1980 ' s, both the middle reach of yangtze river main stem and the dongting lake occurred a trend of decreasing annual sediment transport as a result of decreasing sediment releasing from the upper reach of yangtze river ; and in the recent 3 years ( 2003 - 2006 ), the three gorges reservoir first impoundment additionally reduced the sediment concentration in the middle reach of yangtze river flow with a long time, so a distance would be quite long for suspended sediment recovery, but the distance for bed - material load of suspended sediment recovery would be quite short

    分析結果表明： 20世紀60年代下荊江裁彎后，三口（松滋口、太平口、藕池口）分流分沙減少，下荊江徑流量和輸沙量相應增加，洞庭湖泥沙淤積減少； 80年代中期以後，長江中游幹流及洞庭湖出口的年輸沙量呈減少趨勢，城陵磯至武漢河段河床由淤積轉為趨向沖淤平衡；三峽工程初期蓄水運用后，長江中游含沙量沿程恢復距離較長，但床沙質部分恢復距離相對較短。
  9. Visual modflow computer code was selected to simulate heads distribution, calculate the zone budgets of the area, evaluate the effect of external stresses on the groundwater head, to determine how much water would be diverted from the river as the result of pumping and to demonstrate how the groundwater model can be used as a comparative technique to formulate a new approach for the quantitative groundwater vulnerability assessment in order to optimize utilization of the resource

    在分析河床沉積物滲透性對模型結果的影響時，採用了實際野外水文地質條件而不像前人所採用的假想模型。本論文用visualmodflow建立數值模型模擬預測了地下水水頭分佈，計算區域的水均衡，分析源匯項對地下水水位的影響。在此基礎上進行了全區的地下水脆弱性評價，為地下水資源的合理開發利用提供依據。
  10. Through theoretical computation and experimental observation, it is put forward that the maximal depth of the scoured pits of the embankment is from ten to thirteen meters, and for several pits whose top are rinsed by main flow continuously, their scoured depth have reached twenty meters

    經過理論計算和試驗觀測研究，提出了仁存渡以下沙質河床，丁壩最大沖刷坑水深為10 ? 13米，個別受主流持續頂?的丁壩，最大沖刷坑水深可達20米。
  11. In the suspended sediment transport model, the method of shear stress is adopted to determine the source function in the suspended sediment diffusion equation. through a series numerical experiments and statistical analyses of observed field data, a local coefficient, which can reflect the bottom material and consolidation, is introduced into the classic critical erosion velocity of the sediment

    懸沙輸運模型利用切應力方法來確定對流擴散方程中的泥沙源函數，其中的臨界起動速度利用經典的泥沙起動流速公式前面增加一個局地系數得到，這個系數能反映河床底質結構及固結程度，通過系列數值試驗和實測資料的統計分析確定。
  12. It can work under a variety of dredging conditions with good benefit. because of the complexity in underwater soil, river bed condition and dredging process of a real dredging project, dredging conditions are very often unsteady

    在實際的疏浚作業過程中，由於水下土質、河床形態和作業過程的復雜性，嚴格地講，疏浚工況是非恆定的。
  13. In practice, because of the differences in soil property and irregular riverbed, dredging processes are usually complicated. in addition, dredger operators are required to understand dredging processes and to be familiar with the basic characteristics of the dredging equipment through specific training in order to control the dredging equipment correctly

    生產實踐中，水下土質的差異及河床形態的多變，使得疏浚工況和疏浚作業比較復雜，再加上大型疏浚設備十分昂貴，從而客觀上要求船員事先應通過崗位培訓，了解疏浚過程，熟悉疏浚設備的基本特性，為正確操控疏浚設備，實現安全高效疏浚，提供技術保證。
  14. This was a particularly severe problem in the lower shing mun river in sha tin, but dredging and a bio - remediation project undertaken in 1997 made a huge difference to the smell of the river

    沙田城門河下游以往曾有河水發出惡臭的問題。政府於1997年治理河道，在河床口進行挖掘污染沉積物工程及利用生化處理方法改善沉積物質素，難聞氣味已較以前大幅度減少。
  15. Water quality - guidance standard for the routine sampling and pretreatment of benthic diatoms from rivers ; german version en 13946 : 2003

    水質.河床硅藻類常規取樣和預處理的指導性標準
  16. To help overcome this problem, the shing mun river improvement works were carried out between 2001 and 2005. the project improved the quality of the sediment in shing mun river, both by dredging out contaminated sediment and by applying a bioremediation method

    為解決氣味問題，政府於2001年至2005年間推行城門河環境改善工程，挖掘河床上的污染沉積物及應用生化方法處理淤泥，改善沉積物質素。
  17. In order to explore harness scheme, layout, measurements and parameters concerned of the project, which are appropriate for the characteristic and the evolvement law of the watercourse of ningxia section of the yellow river, the study on the experiment of the scoured pit of the dam buttress and runoff of the root rock of ningxia section of the yellow river is of important theoretical meaning and practicable value

    河道床質也不相同，仁存渡以上河段為沙卵石，以下河段為沙質。為了探索適宜黃河寧夏段河道特性和演變規律的整治方案、工程布局、工程措施及有關參數，開展黃河寧夏段河道壩垛沖刷坑和根石走失試驗研究，具有十分重要的理論意義和實用價值。
  18. The carrying capacity of water resources and water environment in yellow river basin is faced with a huge challenge, such as vegetation destruction, water and soil erosion, riverbed run - up, watercourse shrinkage, water shortage, frequency breakage flow, severity pollution, water quality deterioration, trace to the source and sendiment, coast erosion and regradation

    植被破壞、水土流失，河床抬高、河道萎縮，水源匱乏、頻繁斷流，污染嚴重、水質下降，朔源淤積、海岸蝕退等表明黃河流域水資源與水環境的承載能力面臨著極大的挑戰。
  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. Hokutolite is a natural substance produced in the peitou creek about 90 meters downstream from the hot spring. as water from the spring flows into the stream it cools, and after a certain distance, when the temperature drops to around 80, the mineral - saturated water forms a crystalline deposit on the gravel bed of the stream

    北投石產于北投溪源頭下九十公尺處，當泉水與溪水混合流過一定距離后，在八十度左右的環境下，呈飽和狀態的礦物質就沈澱在河床礫石表面，形成結晶。
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