downstream flow 中文意思是什麼

downstream flow 解釋
順流
  • downstream : adv. ,adj. 順流（的）；在下游（的）。
  • flow : vi 1 流，流動。2 （血液等）流通，循環。3 流過；川流不息；（時間）飛逝；（言語等）流暢。4 （衣服、...
  1. The water current flows over the top of the dentoid baffle to the hydraulic jump as additional momentum. while it is cooperated with a stilling basin, the flowing condition emerged in the basin may be improved greatly and the length and downstream water depth required by the basin can be decreased to a great extent. such an appliance may be also used to solve the problems of insufficiently dissipating water flow energy and aerating flow, which are often faced with those hydraulic engineering constraction as acted by high waterhead, great specific discharge and low froude number

    本文通過齒墩頂部的擴散水舌所形成的附加射流，從上部射入水躍，即可改善消力池內的水流流態，又可降低第二共軛水深，減小水躍長度，增進水躍消能效果，同時還能解決大單寬、低佛勞德數條件下摻氣和消能不足的問題，試驗證實它是一種安全、經濟的消能工。
  2. When the downstream head is greater than about 3/5 of the upstream head, flow is submerged.

    當下游壓頭大於上游壓頭約35時，流量是潛流。
  3. Thus it was demonstrated that the main pressure zone was little affected by the downstream flow condition.

    由此可見，下游的流動情況對主要壓力區幾乎沒有影響。
  4. The gips / gdps series of automatic shut - off valves are safety devices designed to stop the flow of gas when the downstream pressure of the valve reaches a value larger than and / or smaller than the preset operating limit

    升壓感應關斷型?與gdps ?降壓感應關斷型?系列自動關斷閥為安全設備，設計當此閥下游壓力達到大於或?和?小於預定操作限度的壓力值時，來中斷瓦斯流動。
  5. Since 1992, dry weather flow interceptors have been constructed as an interim measure downstream of some key villages, to intercept polluted flows and direct them into sewers

    自1992年起，政府在一些主要的鄉村下游安裝旱季截流設備為臨時措施，將污染河水引至污水渠。
  6. These measurements are complemented by measurements of the flow field downstream of the cascade. the integrated losses and locations of secondary flow features with and without endwall film - cooling are determined for variations of both coolant supply pressure and injection location

    以無端壁氣膜冷卻和有端壁氣膜冷卻兩種情況進行研究，對比地獲得了兩者的綜合損耗和二次流特徵區域隨冷卻氣體供給壓力和注射位置的變化規律。
  7. Install 5 pipe diameters minimum downstream from pump discharge or elbows to avoid flow turbulence. flow straighteners may be required in extreme cases

    安裝在距離泵排泄口或彎管下游至少5倍管道直徑的地方，以避免產生水流擾動。在極端情況下，可能需要流向矯直裝置。
  8. Using a " vortex intake " device, the underground drainage system has the dual benefit of relieving storm flow in downstream urban areas in districts such as western and kennedy town, and avoiding the difficulty of constructing or enlarging drains and culverts in urban areas and the resultant disruption to traffic that may ensue. the " vortex intake " project is a significant piece of hku s research achievements, and exemplifies the collaboration between academia, industry and government

    漩渦進水口的水力工程，不單可以紓緩西區及堅尼地城一帶于暴雨時，因大量急湍的水流往下沖而造成水浸及危險的問題，還避免了在市區興建或擴建排水道及暗渠的工程；在鬧市中進行此類工程十分困難及費時，並且一定會阻礙交通，帶來不便。
  9. 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。
  10. By computing the water level and sedimentation processes with and without considering the extension of flow path, the results show that the effect of the river mouth path extension on the sedimentation of the trail channel is a longer period of evolution for several years or even over 10 years, and furthermore, the effect becomes weaker and weaker gradually from downstream to upstream in general

    通過比較考慮和不考慮入海流路淤積延伸2種情況的計算水位和淤積量的變化得出：單一的河口延伸對下遊河道淤積的影響過程是一個相對較長的過程，需要幾年、甚至十幾年的發展，影響程度自下游到上游逐漸減弱。
  11. The generating and controlling system of the upstream runoff, downstream tidal current and rotational flow in the physical model test for the yangtze river estuary deep channel training project is introduced

    摘要介紹了長江口深水航道整治工程物理模型試驗中配置的上、下游潮汐及旋轉流發生和控制系統。
  12. When the downstream head is greater than about 35 of the upstream head, flow is submerged

    當下游壓頭大於上游壓頭約3 5時，流量是潛流。
  13. When the downstream head is greater than about 3 / 5 of the upstream head, flow is submerged

    當下游壓頭大於上游壓頭約3 5時，流量是潛流。
  14. Thus, the piping - induced failure of two - layer foundation was verified as that ： mass flow firstly appears in the upper weakly permeable layer, and then underground erosion and scouring gradually occur from downstream to upstream between the serviously and weakly permeable layers

    從而驗證了二元結構堤基的滲透破壞模式為：首先在上層弱透水層中發生流土，然後在強、弱透水層之間發生自下游向上游的逐步潛蝕沖刷。
  15. A comparison of the flows with different gate - opening rates shows the causes that opening the gate at a higher rate is favorable to the reduction of cavitation, gate vibration as well as the gate load fluctuation. in addition, a study has been made to show the influence of the high - speed jet flow coming downward from the narrow gate gap on the flow condition in the tunnel downstream to the gate

    通過分析比較不同閥門開啟速率對流動特性的影響，闡明了快速開啟閥門不僅有利於減少空化空蝕也有利於減小弧門振動和啟門力的脈動，此外，研究了門楣處狹窄縫隙高速射流對門后流態、壓力脈動和弧門受力等方面的影響。
  16. The water surface lines in the reach from yichang to shashi, downstream of the three gorges, before and after completion of the three gorges reservoir are calculated by using a steady flow sediment model

    在此基礎上，用恆定流泥沙數學模型計算了三峽水庫建庫前後，其下游宜昌~沙市河段的水面線。
  17. Based on experimental result of energy dissipation and scour protection for downstream of spillway at yu jian kou power station, this paper discusses the flow characteristics, aerated characteristics of flaring gate pier for low dam pivot, the influence on pressure of dam surface and the result of energy dissipation for flaring gate pier. it is put forward to be an available method to solve the problems of energy dissipation and scour protection for depth of covering strata, poor geologic condition and weakness of resistance to scour capability under reasonable use of flaring gate piers and auxiliary dissipaters. thus, a new method is obtained for release of floodwater and energy dissipation of low dam pivot which are provided with low water head, great unit discharge and low froud coefficient. it may be used for reference for design and test workers

    結合魚劍口電站壩下消能防沖試驗研究成果，對低壩樞紐寬尾墩的水流特點、摻氣特性、寬尾墩對大壩泄流能力和壩面壓力的影響以及寬尾墩的消能效果等問題進行了初步探討，提出了合理地使用寬尾墩結合輔助消能設施可有效地解決壩下覆蓋層深，地質條件差，抗沖能力弱的低壩樞紐的消能防沖問題，從而為具有低水頭，大單寬流量，低佛氏數特點的低壩樞紐泄洪消能開辟了一條新途徑，可供有關低壩樞紐設計與試驗工作者借鑒與參考
  18. For example, when the design flow of upward of the peace bridge of upward of the east - one main canal is 45m3 / s, the actual flow quantity is 23. 8m3 / s on the 30th of september in 1989, the water level of the transition region terminal of the mouth of hao wan flume of the east - one main canal had gained the design level of 4. 3m, and the level between downstream and shang tian yuan tunnel was generally higher. it says that the actual discharge capacity now is only about 24m3 / s which is half of the design value. this not only make the benefit of the irrigation district abnormal, but also greatly hinder the economic development of the irrigation district, and lead to the canal run frequently at small flow, high water level, lengthen the discharge duration

    如東一乾渠上段太平橋以上設計流量45m ~ 3 s ， 1989年9月30日實測通水流量23 . 8m ~ 3 s時，東一乾渠郝灣渡槽出口漸變段末端水位已達到設計水位4 . 3m ，其下游至上天院隧洞水位也普遍偏高，即東一乾渠上段目前僅能通過流量24m ~ 3 s左右，只有設計值的50左右，不僅使灌區效益得不到正常發揮，嚴重阻礙了灌區范圍內的經濟發展，而且使渠道經常處于小流量、高水位運行，延長了次通水時間，大大增加了渠道工程的安全管理難度。
  19. Furthermore, the horseshoe shape vortex system occurred to the upstream of the jet exit and the layer structure of vortexes occurred to the wake of the reverse flow region downstream of the jet are also investigated

    另外，觀測到射流噴口上流的馬蹄渦系以及射流逆流區下游尾跡區旋渦的層狀結構形式。
  20. It could be seen that the influence of human activity on stream runoff is very obvious. the quantity of downstream flow depends on precipitation over a catchment and withdrawal from the upstream

    結果表明，本文研究的流域老哈河流域地表水資源減少的趨勢是非常明顯的，並隨著年代的增長在不斷加劇。
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