upstream effect 中文意思是什麼

upstream effect 解釋
上游效應
  • upstream : adv. 向上游，溯流。adj. 1. 溯流而上的。2. （石油工業等）上游的，和石油的勘探、開采及輸送到起運港口有關的〈石油工業此後的提煉等過程則稱為下游（downstream）產業〉。
  • effect : n 1 結果。2 效能，效果，效力，效應，作用，功效；影響。3 感觸，印象；外觀，現象。4 旨趣，意義。5 ...
  1. As the velocity in the nozzle throat is sonic, the effect must be transmitted upstream through the boundary layer.

    當噴管喉部達到音速時，這種影響一定是通過附面層向上傳播而引起的。
  2. Therefore, sequential research on chf is necessary. when in accidental conditions of nuclear reactor, the mass flux of coolant is very low. in such condition, the steam quality is high, and the mechanism of chf is mainly controlled by bulk flow, whereas microcosmic parameters near the chf area are affected by the flow conditions in whole tube which called " upstream memory effect "

    在反應堆事故工況下，冷卻劑流量很低，含汽量很高，其臨界機制與正常運行工況下的臨界機制有所不同，不僅是一種主流控制臨界工況，更由於其局部的各微觀參數受上游流道的累積效果的影響而存在上游記憶效應。
  3. The effect of leakage flow due to the upstream hub axial gap on the rotor performance and the mechanism of interaction between the hub leakage flow and the rotor blade passage flow were studied based on the numerical simulations of the flow fields of a transonic compressor rotor with upstream hub leakage

    摘要為研究壓氣機轉子上游葉根軸向間隙泄漏流對轉子性能的影響程度以及泄漏流與轉子流場之間的相互作用機制，對帶有葉根泄漏流的跨聲壓氣機轉子流場進行了數值模擬。
  4. 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。
  5. 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。
  6. Efficiency of permeable pile dike is closely related to water - sand ratio in upstream flow, direction of the coming flow and seepage rate. this paper investigates mechanism and effect of flow control and aggradation using hydraulic modeling and theoretical analysis. it is shown that suitable seepage rate can help aggradation and suitable coming flow direction can help to govern the flow trend

    研究結果顯示，來流和來沙一定的條件下，透水率在適當的范圍內有利於壩后緩流落淤，入流角在一定范圍內對控導河勢有明顯作用，不同方案組合所對應的緩流落淤效果和控導河勢作用具有一定的差異性。
  7. 2. specific mutation from a to c at - 137 bp site upstream from transcription start point had no effect on the inducibility of the promoter in response to sa and bth. 3

    在轉錄起始點上游137bp定點將a突變為c后，對化學啟動子的化學誘導應答性沒有明顯的影響，但對誘導效應的向上運輸存在一定程度的阻抑作用。
  8. The supply chain mode is further extended to study the upstream demand mode, for which it is proved that the bullwhip effect is not always amplified under different forecasting technologies

    並對二級供應鏈進行拓展，證明在信息傳遞過程中，非最優預測將導致上游需求模式復雜化，牛鞭效應逐級遞增，而最優預測可使上游需求模式簡化，遏制誤差的傳遞。
  9. Upstream channels cover in 5 65mhz, which is a part of the bandwidth of high frequency （ hf ） and very high frequency （ vhf ）. it is liable to incur noises ingress onto the band. since hfc system has the tree - and - branch topology between the fiber - node and subscriber units, subscriber units belonging to one fiber - node share the same upstream channel, forming the " noise funneling " effect

    上行頻帶位於5 - 65mhz之間，這一頻帶為高頻（ hf ）和甚高頻（ vhf ）的一部分，此頻帶易受噪聲干擾；此外，由於從光節點到用戶端為樹型分支結構，同一光節點的多個用戶共享同一通道，形成了漏斗效應。
  10. The authors analyzes the effect of the r & d investment of the downstream enterprise on the floating - price contracts and fixed - price contracts through establishing the model of the curnot competition between the upstream monopolist and the downstream enterprises

    摘要構建了一個上游企業壟斷、下游兩企業進行古諾競爭的模型，分析在浮動契約和固定契約下，下游企業r & d投入的效應。
  11. Results indicate that the characteristics of cavity flowfield were altered similarly by gas and liquid injection. the local boundary layer or shear layer are modified by injection on upstream / bottom wall of cavity, and the cavity shear layer immediately becomes angled with respect to the main flow direction. the injection on fore wall of cavity has little effect on the characteristics of cavity flowfield

    結果表明:氣體/液體噴流對凹腔整體流動特徵的影響是一致的，凹腔上游/底壁噴流破壞了當地附面層或剪切層，導致凹腔剪切層偏向主流方向;凹腔前壁噴注對凹腔流場特徵基本無影響。
  12. Compared to regular bullwhip effect, chapter 5 deduces bullwhip effect in delivery schedule, which arises when downstream sites of the supply chain could n ' t share with upstream sites supply information of delivery time. to implement simple and reportable delivery performance in their erp, i rationally transform pert method to compute delivery schedule and forecast secure inventory level precisely. this gives the downstream partners a clear picture of the supply conditions of upstream suppliers, preventing delay of individual supplier diffusing to the whole chain

    在供應鏈的實際操作中，作者發現交貨期的延誤程度逐級放大的現象，而在以前學者的研究中並未涉及到，本文類比通常的牛鞭效應，將此現象稱之為「交貨期的牛鞭效應」 ；並比較工程系統，將供應鏈作為商業系統，合理改進系統工程中常用的pert方法，用於估算供應商的交貨期，從而更精確的確定安全庫存，解決「交貨期的牛鞭效應」問題。
  13. The research indicates that the orifice jet in mixing conditions has many different points from the pipe jet. focusing on the jet ejected from the orifices of different diameters and lengths, this paper studies the orifice jet when the fluid upstream of the orifices is in mixing conditions. the main purpose is to qualitatively study the effect of orifice diameters and lengths on the spread of the jet

    射流是在工程實際中廣泛存在的一種流動現象，噴嘴出口的流動狀態對射流的發展有很大的影響，前人對射流的研究主要集中於噴嘴前流體是完全發展管流的情形，本文研究了全混狀態下的板式射流，研究結果表明全混狀態下的板式射流具有很多不同於管射流的特點。
  14. Therefore the impervious face - slab set on upstream face of dam is a key to seepage control of rcc dams. and the value of impervious face - slab is showed by the impervious effect

    因此在碾壓混凝土壩上游設置防滲面板是控制碾壓混凝土壩滲漏的一個關鍵環節，而防滲效果則是防滲面板的價值所在。
  15. By using a reynolds - averaged two - dimensional computation, the effect of upstream wake on unsteady separated flow field of downstream adjacent vanes was investigated in low - speed axial compressor

    摘要利用二維數值模擬研究了低速軸流壓氣機上游尾跡對下游相鄰葉排的非定常分離流場的影響。
  16. The paper also analyzed the request access delay ( rad ) when using the bandwidth allocation algorithm, and found that the number of allocated contention slots has little effect on the rad, however the rad connected with the length of upstream time segment being depicted

    論文還分析了在該帶寬分配演算法影響下的請求分組訪問延遲，發現請求分組訪問延遲受競爭時隙數的影響不大，而是與map幀所描述的上行時間段的長短有關。
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