降水頭 的英文怎麼說

中文拼音 [jiàngshuǐtóu]
降水頭 英文
dropping head
  • 降 : 降動詞1. （投降） surrender; capitulate 2. （降伏） subdue; vanquish; tame
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 水頭 : waterhead; head; flood peak水頭落差 head fall; 水頭坡降 water table gradient
  1. The figures are nearly all of men, but closer inspection shows that the heads of the men were of antelope which the bushmen associated with water and rainfall

    影像幾乎都是男人，不過仔細觀察發現，男人的頭都是羚羊，關系著布西曼族的水和降雨量。
  2. The insulin - like growth factor - 2 ( igf - 2 ) and igf conjugated protein - 6 ( igfbp - 6 ) mrna level in rat calvaria bone tissue and mc - 3t3 - el cells were detected by northern blotting analyses and reverse transcription polymerase chain reaction. the estrogen responsive element ( ere ) in igfbp - 6 gene promoter was identified and involved in tcdd - reduced regulation of the gene expression by electromobility shift assays ( emsa )

    正常胎鼠頭蓋骨組織igf一2mrna呈高水平表達狀態，而igfbp一6mrna的水平較低; ccf胎鼠頭蓋骨骨組織內igf一2mrna的表達較正常胎鼠降低， igfbp一6mrna的表達則明顯升高; atra和e :聯合應用時， atra可以抑制雌激素對細胞內igf一2和igfbp一6的這種調節作用。
  3. " increasing consumption by just one serving of fruit or vegetables per 1, 000 calories per day was associated with a 6 percent reduction in head and neck cancer risk, said neal freedman, cancer prevention fellow at the nci

    Nci的癌癥預防專家尼爾o弗里德曼說， "每天多吃一份1000卡的水果或蔬菜就可以使頭頸癌的發病率降低6 % 。
  4. Abstract : the advantages and disadvantages of siphon filtering pool in water plant were analyzed, and improvement measures were proposed in terms of increasing reverse wash suction head and lowering the reverse water requirement

    文摘:通過對自來水廠虹吸濾池的優點及弊端的分析，指出了提高反沖洗水頭、降低反沖洗耗水量的改善措施。
  5. ( 4 ) through the hydraulic property experiment of micro - hole lateral pipes of simple sdi in air, it was found that the average pressure of 60 mitre length lateral pipes was at the position of per 40o / o ~ ~ ~ 50 % of the effectual pipe length from the fist micro - hole, major pressure - loss was occurred at the ahead part of half pipe. the pressure uniformity reduced with orifice aperture ? increasing, and the relationship between pressure uniformity and initial water pressure was poor. running under the initial water pressure of 1. 5 meter, the discharge uniformity reduced with orifice aperture ? increasing, and when the orifice aperture smaller than or equal 1. 0mm, irrigation uniformity could achieve above 0. 6

    （ 3 ）通過對空氣介質中簡易地下滴灌的微孔毛管試驗研究發現： 60m管長的毛管平均壓力水頭的位置基本上在距第一孔口的有效管長40 - 45的地方；大部分水頭損失發生在毛管的前半部分；壓力均勻度隨孔徑的增大而減小，但與初始工作水頭關系不密切；在1 . 5m以下的工作壓力下運行，沿程出流均勻度隨孔徑的增大而降低，當孔徑不大於1 . 0mm時，灌水均勻度可以達到60以上；當孔徑大於等於1 . 2mm時，灌水均勻度低於50 。
  6. It is concluded : the determination of the center spacing may be conducted under the permissible elevation of the exit line of seepage surface on slope surface downstream. in the end, the author has analysed the seepage field what the holes are placed two rows along the slope height

    另外，在對比多種孔距的方案分析結果的基礎上，得出結論：排水孔孔距變化對邊坡滲流場沿邊坡走向方向水頭分佈影響明顯，布設排水孔應根據目標降深確定排水孔孔距。
  7. On the basis of analysis for recharge, flow - off and drainage of research area, the paper concludes that the main possible cause for the fall of water head is groundwater exploitation by comparing the curve of rainfall - time and the curve of observation heads of some observation well

    在充分分析研究區補給、徑流和排泄規律的基礎上，文章通過比較降雨歷時曲線、部分觀測孔觀測水頭曲線得出開采量可能是影響水頭下降的主要因素。
  8. Analysis of rainfall characteristics in dutou rainfall station

    渡頭雨量站降水特性初步分析
  9. The settlement depends on not only the depth of dewatering but also the permeability of soil

    地表沉降不僅取決于坑外降水深度和坑內外水頭差，還與土層的滲透性有關。
  10. During the excavation of foundation pit, due to the wide variation in water lever, the huge head fall should result in drastic flow of the ground water, which will bring about a full influence on the deformation of the retaining wall and on the surrounding structures in a large - scale range

    在深基坑開挖過程中，需大幅度降低基坑水位，巨大的水頭差將使得土體孔隙中的水運動趨向激烈，從而影響到基坑支護結構的變形，並由此對較大范圍內的鄰近地段的安全產生影響。
  11. ( 2 ) the method of finite element discrete and optimal parameter back analysis is adopted. ( 3 ) concentrated on the question of high external water pressure of the deep - lying tunnel, the basic theory and method calculating external water pressure are systematically studied. ( 4 ) based on jinping cascade 2 hydropower station, numerical simulation rain infiltration of seepage field under different drainage pattern and grouting pattern are studied, also, the high external water pressure is analyzed and studied and some seepage control measures are put forward

    （ 2 ）採用有限元離散?優化法進行參數的反演分析； （ 3 ）針對深埋隧洞的高外水壓力問題，進一步分析和研究了襯砌水荷載及外水壓力的作用機理和計算方法； （ 4 ）以錦屏二級水電站深埋長引水隧洞作為本文的主要研究對象，採用考慮降雨入滲滲流場分析的方法對排水方案和灌漿封堵方案不同情況下的滲流場的水頭分佈進行了數值模擬，並對其外水壓力進行了分析和研究，提出了滲流控制的具體措施。
  12. Through an example of dewatering engineering at international stock exchange hotel in wuhan, calculating with program, and ensuring foundation pit draw down, the optimum unit value of depth of filter tube and stop water heavy curtain to make water drawdown minimum was got, and put forward a sort of method of thinking in optimizing design of foundation pit dewatering

    通過國際證券大廈降水工程實例，利用程序進行計算，在保證基坑降深的前提下，找出水頭降最低的止水帷幕的深度和濾水管長度的最佳組合值，為深基坑降水優化設計提供了一種思路。
  13. The nonlinear exponent is a function of the radial distance from the pumping well. the two - regime well flow problems being in the steady state. in the fourth chapter, the problems of two - regime well flow have been discussed concentrating on a kind of special seepage law

    第四章對一種特殊的非線性滲流規律即充分紊流的情況，進行了全面、詳細地討論，推導出了該情況下井流問題的滲流速度、水頭降深和井流函數的解析表達式，作出了些具有代表性的標準曲線。
  14. It can be used to grind straight line fiat edge, pencil edge, og edge, etc. it adopts synchronized belts two belts, two side holding and synchronized drive to transmit glass, the upper belt can be adjusted vertically according to the glass thickness, two groups of spindles are distributed symmetncally, it can grind two sides at the same time, one of the two groups of spindles is fixed while the other can move horizontally, spindles adjustment can be made in three directions vertical rise and fall, horizontal forward and backward

    可用於磨削直線平邊圓邊og邊等採用同步皮帶雙帶雙側夾持同步驅動傳送玻璃。上帶可根據加工玻璃厚薄作上下調整，兩組唐頭對稱分佈，平行雙邊同時磨削，兩組磨頭其中一組固定。另一組相對可作平行移動，磨頭調整有三種運動垂直升降水平進退以及翻轉。
  15. Loss of head is minimized by the balanced disc and its " aerofoil " design. streamlined body without pockets contributes to straight - through flow

    通過平衡閥瓣及其「翼型」結構，將水頭損失（或位差損失）降到最小程度。流線型閥體，不再需要凹穴來幫助流體直線流通。
  16. To fight against the ever increasing dry area and deteriorating drought situation, it is necessary and urgent to use sci - tech achievement to improve the utilization of rainfall. and this is the foundation for the sustainable development of dryland farming and rural economy in ningnan area

    近年來由於水資源短缺勢頭難以逆轉、旱情加劇，因此，藉助科學技術進步，提高降水利用效率，提升降水資源化程度，就成為寧南旱區農業與農村經濟實現可持續發展所要解決的重大問題。
  17. The primary contents are as follows : ( 1 ) based on the fundamental seepage physical equation, the basic differential equation of saturated - unsaturated seepage in porous mediums has been deduced, in which the pressure head is the fundamental unknown quantity. a calculated model for analysis of saturated - unsaturated seepage field with the boundary condition of rain infiltration also has been developed

    總體說來，本文主要從以下幾個方面開展了研究： （ 1 ）由基本滲流物理方程出發，以壓力水頭為基本未知量推導多孔介質三維飽和?非飽和滲流微分方程，在此基礎上分析了邊坡在有降雨入滲條件下滲流的定解條件和計算模型。
  18. A large study of 500, 000 american retirees has found that just one extra serving of fruit or vegetables a day may reduce the risk of developing head and neck cancer

    一項對美國50萬名退休人員進行的大規模調查顯示，每天多吃一份水果或蔬菜可能會降低頭頸癌的發病率。
  19. Results show that the improved proposals can effectively lower the raised level of reversed head at no. 2 lock

    結果表明，在兩線船閘運行的情況下，改進方案能有效地降低二線船閘反向水頭的壅高。
  20. The author has analysed the seepage behavior of the fields in slope with the major parameter of the drain hole diameter and the length of hole. it is concluded that within the usual diameter of the hole, the size of the hole diameter has only minor influence on the field and the length of hole has more distinct influence. the author has analysed the effect of the center spacing change on the seepage field

    其次，本文利用排水子結構法模擬排水孔，對排水孔孔徑、孔長多種布設方案的滲流場分佈對比分析，認為在通常可能取值的孔徑范圍內，孔徑變化對排水孔排水效果有影響，但影響較小；提出了孔徑選擇的原則；排水孔排水效果對排水孔孔長變化比較敏感，排水孔布設長度的選取應根據邊坡處治需要降低水頭的沿邊坡傾向方向的邊坡范圍來確定。
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