hydraulic loss 中文意思是什麼

hydraulic loss 解釋
流體損失
  • hydraulic : adj. 1. 水力的，液力的;用水發動的。2. 液壓的，水壓的。3. 水力學的。4. 【建築】水硬的。adv. -lically
  • loss : n. 1. 喪失；丟失，遺失。2. 減損，損失，虧損（額）；損耗；減少，下降。3. 失敗；輸掉。4. 錯過；浪費。5. 損毀；【軍事】傷亡；〈pl. 〉 傷亡及被俘人數。
  1. Reynolds numbers ( based on average velocity at passage inlet and hydraulic diameter of the passage ) are changing from 20000 to 80000 and the extraction ratios ( suction ratios, sr ) are changing from 0. 30 to 0. 60 for each test model. so the influences of reynolds numbers, suction ratios and etc. on the discharge coefficients and pressure loss characterist ics are also presented. flow fields of typical passages are visualized with the flow visualization techniques and measured with hot - wire anemometer

    對每一種通道結構，實驗在不同通道進口雷諾數（ re = 20000 、 40000 、 60000 、 80000 ）和不同通道總出流比（ sr = 0 . 30 、 0 . 45 、 0 . 60 ）下進行，以研究這兩個流動參數及其它相應變化的參數（氣膜孔的雷諾數re _ h 、氣膜孔與通道的動量比i等）對出流特性和流阻特性的影響規律。
  2. ( 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 。
  3. The flow regime, sediment deposition and the loss of head of two head tanks of the sewage pumping station with different dimensions are studied by using a hydraulic model test method

    摘要採用水力模擬的方法對兩個不同結構尺寸的污水泵站高位井的水流流態、泥沙淤積及水頭損失等進行了模型試驗。
  4. Strength of body and hydraulic pressure loss testing of backflow special check valves

    迴流專用止回閥的閥身強度和液壓損失率檢驗
  5. The reasonable limited water level can solve the conflict between flood control and profit during flood period of complicated hydraulic engineering system, and the aim of reducing flood disaster loss and getting maximum system profit can be realized

    合理的汛限水位可以更好地解決復雜水利系統汛期防洪與興利的矛盾，進而達到減少洪災損失、發揮系統最大效益的目的。
  6. The main achievements are as follows : it is verified that there is an unique mean square solution to the stochastic surge model ; the formulas for probability density function of head loss and the maximum relative surge level were deduced ; the joint probability density function for solving surge process and the mean head process of simple hydraulic system were also derived

    主要研究成果有：證明了調壓室涌浪隨機模型存在唯一的均方解；推導出了水頭損失和最大相對涌浪值的密度函數計算公式；求解了調壓室涌浪解過程的聯合密度函數和簡單水力系統的水頭均值過程等。
  7. Because the operation in water hydraulic valves is controlled by flow fluid and the pressure drop results from energy loss of flow fluid past valve channel, the flow state of fluid in valves becomes the most important factor for the operational property of valves

    由於水壓閥是通過控制流體流動來操作系統的，閥的壓降也來自於流體流經閥道時的能量損失，因此閥內的流體流動狀態就成為決定閥操作性能最為重要的因素。
  8. Water hydraulics will take place of oil hydraulics step by step. spool valves and poppet valves are not only the key components but also the main components for energy loss, so the property of water hydraulic valves is significant for water hydraulic control system

    在水壓控制系統中，滑閥和錐閥是構成水壓控制系統不可缺少的元件，同時水壓閥也是產生能耗的一類主要元件，因此水壓閥的性能對整個系統的性能起著至關重要的作用。
  9. After simulating the model of water hydraulic valves, the velocity distribution, pressure distribution, energy distribution can be obtained and relations between the valve channel and the energy loss, the negative pressure distribution can be analyzed, which offers the theory foundation for designing water hydraulic valves with the high efficiency, low energy loss and low noise

    通過對水壓閥模型的cfd穩態和瞬態解析，可以得到水壓閥內流場的速度分佈、壓力分佈及能量分佈，據此定性分析流道結構（速度、壓力、流動的分離與再附壁，旋渦的產生與消失等）與能量損失、負壓分佈等的關系，從而為設計出高效率、低能耗、低噪聲的水壓閥提供理論依據。
  10. It is pointed out that passage hydraulic loss is related to the flow circulation, the influence of flow deviation on passage hydraulic loss and pump assembly efficiency is analyzed, the forming mechanism of flow deviation is investigated, and the method of eliminating flow deviation is put forward

    指出流道水力損失與水流環量有關，分析偏流對流道水力損失和泵裝置效率的影響，研究偏流形成機理，提出消除偏流的方法。
  11. Results indicate that flow deviation in discharge passage is formed by co - action of pump outflow circulation and secondary flows in outflow curved pipe, hydraulic loss of discharge passage increases and pump assembly efficiency decreases because of flow deviation

    結果表明：水泵出流環量和出水彎管二次流共同作用形成了出水流道偏流，偏流使出水流道水力損失增大，泵裝置效率下降。
  12. The conclusion is that iron ceramics media has a lot of advantages over sand media in the fields of filter run and yield. it has good quality of little hydraulic pressure loss, longer period and capabilities of impurity

    結果表明，塗鐵陶粒濾料濾池具有過濾水頭損失小、運行周期長、截污能力強的優點，其過濾性能優于石英砂濾料濾池。
  13. After the introduction of the innovations and the improvements of foreign hydraulic shock absorbers, the profound cushion mechanics study is done aiming to the shock absorbers chosen for the thesis ; the cushion process of hydraulic shock absorbers can be divided into several stages, which include local pressure loss caused by across sectional area shrinking, sharp edge throttling and aperture throttling

    在對國外新型液壓緩沖器的研究基礎上，針對本課題所選液壓緩沖器的結構特點，提出了分階段建立機理數學模型方法。將液壓緩沖器緩沖過程分為：由於流道斷面突然收縮引起的局部壓力損失階段，緩沖柱塞的邊緣和緩沖孔的邊緣形成銳緣節流階段，當緩沖柱塞進入緩沖孔中形成的縫隙節流階段等三過程。
  14. The paper introduces experience of selecting hydraulic calculation formula and illustrates calculation of critical velocity of flow ( or critical pipe diameter ) and friction loss of pressure pipe in tailings transport and how to select the formula with examples

    介紹工程實踐中，選用水力計算公式的體會，對尾礦輸送中臨界流速（或臨界管徑）和壓力管道摩阻損失的計算以及如何選用公式分別作了舉例說明。
  15. Special products for hydraulic concrete constructions. synthetic resin or hydraulic binder based products. fire loss at 450 degrees celsius and ash content at 950 degrees celsius

    水硬性混凝土建築用特殊產品.合成樹脂或水凝基製品. 450時燒失和950灰份含量
  16. Apart from these, the paper also proposes several improvements for pump control, which include changeable cut off control that can prevent several kinds of relief loss of hydraulic system, cross sensing control of pump that can enlarge the variable working range and compound control that combine two kinds of valve control method together

    此外，還提出了幾種泵控改進方案，其中包括可防止多種系統溢流狀態的可變壓力切斷控制、能增大泵的變量工作范圍的交叉功率傳感控制以及將兩種閥控策略結合在一起的復合控制技術。
  17. The article builds up computer module of hydraulic computation : computation module of point measuring method, of area method, of the loss in head of part and of result show

    建立了水力計算計算機模塊：逐點法計算模塊、面積法計算模塊、局部水頭損失計算模塊和結果顯示模塊。
  18. The results show that loss of hydraulic conductivity of robinia xylem embolism is different under the condition of different soil humidity and loss of hydraulic conductivity is related with net photosynthetic rate, transpiration rate, stomatal conductance, the flow of water, atmospheric temperature, relative humidity, photosynthetic available radiation, and hydraulic conductivity

    研究結果表明：木質部導水率損失在不同的土壤含水量以及不同的測定時間條件下是有顯著性差異的；刺槐的導水率損失與凈光合速率、氣孔導度、水勢、蒸騰速率、光合有效輻射、大氣溫度顯著相關。
  19. It is very important to diagnose the fault of hydraulic system in time and accurately in enhancing productivity, decreasing the times of stopping machine and reducing the loss

    及時準確地進行液壓系統故障診斷對提高設備生產效率、減少故障停機和降低故障損失起著舉足輕重的作用。
  20. Computation of the ballast tank hydraulic loss based on resistance network

    用電阻網路方法計算船舶壓載艙的壓力損失
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