水頭壓力 的英文怎麼說

中文拼音 [shuǐtóuyālì]
水頭壓力 英文
head pressure
  • 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...
  • 壓 : 壓構詞成分。
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 水頭 : waterhead; head; flood peak水頭落差 head fall; 水頭坡降 water table gradient
  1. Because of the technical complexity of the turbine for the three gorges project and on the basis of several important technical problems which have been defined in the international bidding documents for 14 generating units in the left bank power station, the owner of the project has decided another some important technical problems based on appraisal and comparison in the bid appraisal stage after the bidding documents are analyzed and the tender documents are cleared by the tenderers

    由於三峽工程水輪機技術上的復雜性和挑戰性，在左岸電站14臺機組國際招標文件已明確了若干重大技術問題的基礎上，在機組議評標階段，對招標文件進行分析和投標商對投標文件進行澄清說明后，經評議比選，業主又決策了幾個重大技術問題，主要有：水輪機設計水頭的確定，負傾角葉片水輪機的應用，兩套水力設計，舍棄初期轉輪，蝸殼進行水壓試驗等。
  2. Standard specification for reinforced concrete low - head pressure pipe

    鋼筋混凝土低水頭壓力管標準規范
  3. Standard specification for reinforced concrete low - head pressure pipe metric

    鋼筋混凝土低水頭壓力管的標準規范
  4. This paper analysed working principles and controling features of water lifts about the head pressure transition. plc was used to operate controling system so as to work the system well

    摘要對水頭差壓力轉換提水裝置的工作原理及控制特點進行了分析，使用可編程式控制制器（ plc ）控制系統運行，使系統很好的工作。
  5. A research on canceling telescopic joint of the penstock about the high head development near power house

    取消高水頭電站壓力鋼管近廠房段伸縮節研究
  6. ( 8 ) as for the runnel which is located at a karst zone with a high water level, external water load is the main one, and rock pressure is secondary

    門）在巖溶富水區隧道地下水水頭較大時，外水荷載是襯砌結構的主要荷載，圍巖壓力相對來說是次要荷載。
  7. 2. based on the results of experimental data of the tailrace surge tank of yi xing pumped - storage station in jiangsu province, this research investigates the methods for the head loss coefficients of throttled surge tank with linking pipe by means of the method which incorporates experimental results with theoretical analysis

    結合江蘇宜興抽水蓄能電站尾水調壓室水力模型試驗成果，採用理論計算與模型試驗結果相結合的方法，對有連接管的阻抗式調壓室局部水頭損失系數的計算方法進行了討論。
  8. Low pressure trickle irrigation is based on the little effect of pressure on the quality of drip irrigation system

    壓力水頭對滴灌系統的灌水質量影響很小，這為低水頭滴灌提供了理論依據。
  9. Many factors have effect on irrigation uniformity. with the growing of pressure, how is irrigation uniformity of trickle irrigation varying on different condition of the diameter of drip line, the distance of emitters, the length of drip line, the style of emitters, the flux ratio of emitters and the face gradient of little irrigation district. the consequence shows that pressure has puny effect on irrigation uniformity

    滴灌系統的灌水均勻度受眾多因素的影響，本文通過毛管的管徑、滴頭間距、毛管的管長、灌水器的類型和灌水器的流量系數不同的情況下，灌水均勻度隨壓力水頭變化模擬結果顯示，壓力水頭對灌水均勻度影響非常小。
  10. Open the hot water faucet to depressurize the water tank

    打開熱水水龍頭，降低熱水器內膽的壓力。
  11. In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively

    本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。
  12. This paper analyses the stress and deformation of the two lining structure types of the surge shaft surrounded with crush rock under the action of high water pressure by using fem, compares the two lining types ' s merits and demerits in stress, deformation, fracture state, the combining bearing of surrounding rock and lining structure, the safety and economics

    本文針對圍巖條件比較破碎，裂隙發育的調壓井洞室結構，就兩種襯砌結構型式分別進行了高水頭作用下的有限元數值模擬，從調壓井襯砌結構選型角度分析對比了兩種襯砌結構型式在圍巖及襯砌結構應力與變形、襯砌結構鋼筋混凝土開裂、圍巖與襯砌結構聯合承載、結構安全儲備、經濟等方面的優劣。
  13. ( 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 。
  14. Water - fittings for house installation ; boltings with flat seal ; one side threaded coupling with inside - thread, on the other side steel tube nozzle, copper tube nozzle or sleeve pn 10

    家裝設備用水管配件.平密封螺旋接頭.壓力10巴的一端
  15. Water - fittings for house installation ; boltings with flat seal ; one side threaded coupling with outside - thread, on the other side steel tube nozzle, copper tube nozzle or sleeve pn 10

    家裝設備用水管配件.平密封螺旋接頭.壓力10巴的一端
  16. Large scale salt - water intrusion has been occurred since late 1970 ' s due to freshwater exploitation by human activity

    20世紀70年代末期以來，隨著對地下淡水的過度開采，淡鹹水水頭壓力差減小，鹵水通過古河道砂層快速南侵。
  17. Standard test method for permeability of granular soils constant head

    在常水頭壓力下顆粒狀土壤滲水率的標準試驗方法
  18. Cast iron special castings for asbestos cement pressure pipe lines ; bends

    石棉水泥壓力管道用鑄鐵的專用鑄件.彎管頭
  19. Cast iron special castings for asbestos cement pressure pipelines ; spigot ends

    石棉水泥壓力管道用鑄鐵專用鑄件.套管頭
  20. To meet the peaking need of the grid and improve the source structure of the system, it is necessary to construct the mass pumped storage power station. and more high pressure tunnels will be constructed

    大規模抽水蓄能電站的建設是現代電網的必然產物，它在電力系統中起調峰填谷作用，提高電網運行的靈活性和可靠性；相應高水頭大直徑水工壓力隧洞的建設也逐漸增多。
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