起動流速 的英文怎麼說

中文拼音 [qǐdòngliúsù]
起動流速 英文
competent velocity
  • 起 : 起Ⅰ動詞1 （站起; 坐起） rise; get up; stand up 2 （取出; 取走） draw out; remove; extract; pull 3...
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 起動 : start （a machine, etc. ）; switch on起動電動機 starting motor; 起動器 starter
  • 流速 : [機械工程] velocity of flow; strength; [水文] current velocity; current speed; flow rate流速管 pi...
  1. Tahir r b, molder s and timofeev e v. unsteady starting of high number air inlets - a cfd study [ r ]. aiaa 2003 - 5191

    梁德旺，袁化成，張曉嘉.影響高超聲速進氣道起動能力的因素[ c ] / / 2005年沖壓發動機技術交流會論文集， 2005
  2. In this paper a kind of cardio - cerebral arterial bifurcation vessel hemodynamic characteristics are studied with the boundary element method, and the blood flowing velocity vector distributions have been calculated. in addition, the flow field distribution and the pressure on the particle surface are also calculated, when there is flow - round particle at the place of bifurcation, the move tendency of the particle is judged, the possible reasons of causing the atherosclerosis, thrombus, angioma are analysed

    本文用邊界元方法研究了一類典型心腦動脈分支血管中血液流動的流體動力特性，計算了分支血管血液流動的速度矢量分佈，同時計算了分支附近有多個顆粒狀繞流物時血液的流場分佈，及顆粒物所受壓力狀況，給出了顆粒物的運動趨勢，分析了引起粥樣斑塊病變、血瘤、血栓的可能原因
  3. In hydraulic systems, the flow rate of the fluid may be considered as a through variable, and the pressure causing the flow may be the across variable.

    在水利學系統中，流體的流速可考慮作流通變量，而引起流動的壓力可考慮作跨接變量。
  4. When flow velocity decreases below the corresponding incipient motion condition, no sediment movement occurs.

    當水流速度小於相應的起始運動時，將無泥沙運動。
  5. 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。
  6. Whether sand can saltate from sand bed surface and quality of sand incipience are very important to the sand transport and the form of wind - blown - sand

    沙粒能否起動以及起動質量如何，如起動初速度、起動角度等參數都直接關繫到沙粒的輸運和風沙兩相流形成。
  7. Universal type that guangzhou dongchen electric vehicle co., ltd develop the latest electric car mix with the motive to become soon the green environmental protection motor car, it broke the traditional consciousness, the way that whole car lines that tradition of limitless become soon, that car have the zero row to put, free from pollution, have no the noise, mentally retarded consume, start steady, long drive route, excellent climbing ability, the special advantage of low etc., function index sign of movement cost is already the advanced level, it broke the tool of traditional transportation means of transportation flowing freely of world, now a humanities culture for be in the leading, a nature consciousness for be in the leading

    廣州東辰電動車有限公司最新款的普及型混合動力變速綠色環保電動車，它打破了傳統的無極變速方式，該車具有零排放、無污染、無噪音、低能耗、起動穩、行程長、爬坡力強、運行成本低等獨特優點，性能指標已達世界先進水平，它打破了傳統交通代步工具的局限意識，整車線條流暢，體現一種領先的人文文化，一種領先的自然意識。
  8. In view of this situation this article has conducted research to the design of metallurgy auxiliary biography with the frequency conversion table electrical machinery first multianalysis to the frequency changer and the frequency conversion table electrical machinery movement characteristic is carried out, the voltage waveform harmonious which the frequency changer outputs is big, attacks in a big way, and the voltage climbing rate reaches as high as 6600v / mu s which is 20 times ordinary sine alternating voltage, the rolling mill auxiliary biography table set the extremely strict request to the electrical machinery ; its movement frequency is very low, rate frequency in 8 - 20hz ; the velocity modulation scope is wide, the lowest movement frequency lowers to 1hz, and the starting number of times is quite frequently, each hour reaches as high as 600 - 800 time, the impact shoulders in a big way, the overload capacity request is high

    針對這一情況本文對冶金輔傳用變頻輥道電機的設計進行了系統研究。首先對變頻器和變頻輥道電機的運行特性進行詳細分析，變頻器輸出的電壓波形諧波大，沖擊大，電壓上升率高達6600v / s ，是普通正弦交流電壓的20倍;軋機輔傳輥道對電機提出了十分嚴格的要求:其運行頻率很低，額定頻率在8 - 20hz ;調速范圍寬，最低運行頻率低到0 . 5hz ，起動次數相當頻繁，每小時高達600 - 800次，沖擊負荷大，過載能力要求較高。
  9. Constant acceleration start way is suggested by controlling the current phases

    提出了通過電流相角控制的恆加速起動方法。
  10. The main products of our company : series of mining emulsion pump station, series of electric haulage shearer, sparying pump station, series of mining flame - proof vacuum / air electromagnetic starter, series of mining vacuum / air feeding switch, series of mining fame - proof and natural - safe. type ac soft starter, series of hydraulic stand valve and pipe system, high flow rate quick - moving valve, the new product nearing into market - the hydraulic support electric - control system, mining electric drill, hydraulic valve test table, electric performance test table

    公司主導產品為：系列電牽引採煤機、系列礦用乳化液泵站、噴霧泵站、礦用隔爆兼本質安全型交流軟起動器、系列礦用隔爆真空、空氣電磁起動器、系列礦用真空、空氣饋電開關、系列液壓支架閥類及管路系統、大流量快速移架閥、即將投入市場的新產品? ?液壓支架電液控制系統、煤電鉆系列、液壓閥試驗臺、電性能試驗臺等。
  11. Our research obtains absolute fluent incipience and general incipience information of sand thickness field and velocity field. firstly proposed a conclusion that the ratio of incipient efficiency on fluent and general incipience varies with wind speed

    本文分析了純流體起動和綜合起動條件下沙粒的濃度場和速度場信息，發現了兩種起動的效能比隨風速的變化關系。
  12. The experiment study on critical velocity of the rongchang fine coal powder

    榮昌精煤粉起動流速試驗研究
  13. In this thesis, first, reasons and factors for the stability of loose rock dams were summarized according to the field surveys and certain expert ' s experiences. then, researches on block stability problems were reviewed, and according to the relationship between grain size and incipient velocity, it is found that the block weight is in direct proportion to 6 - 9 power of incipient velocity, and 50 % increase of the velocity will result in about 40 times change of the block weight. after that, experiments were conducted in a flume, focusing on the relationship between incipient velocity and some main factors including block weight, water depth over the dam, cross - section size, block material and river bed material

    本文首先根據散拋石壩損毀情況的現場調查資料，結合有關專家多年的整治經驗，總結出壩體的損毀原因及影響因素；對現有塊體穩定性的研究成果進行回顧和總結，並針對散拋石壩的直接損毀現象，結合山區河流的水流、地形特點，利用塊體粒徑與起動流速的關系，提出塊體穩定重量與起動流速高次方成正比的概念，流速50的增長可能導致塊體穩定重量接近40倍的變化；通過二維變坡水槽試驗，研究了壩體穩定的主要影響因素，包括塊體重量、壩頂水深、斷面尺寸、塊體材料（塊石和卵石兩種） 、護底等，結果表明對于山區河流，試圖僅僅通過增加壩體單個塊體重量或斷面尺寸來提高壩體穩定性效果甚微；最後，根據西部地區的自然、經濟、交通等條件，提出可以採用柔性混凝土鉸鏈體等一類整體性較好的護面層作為散拋石壩的防沖毀措施，以期取得良好的工程效果。
  14. And the relation between these velocity was analyzed at last. this is the conclusion : ( 1 ) the distribution of the velocity and concentration are get in the open channel flow and as the sewage flow is gravity flow, the equations is fit for this too. ( 2 ) generally speaking, the self - cleaning velocity should be the starting velocity, and it could fit for the self - cleaning target in limited sense theoretically, but when facing some higher requirement, it is not large enough

    最後結合污水流動的最小設計流速與顆粒起動流速、臨界不淤流速的關系進行了分析，結論如下: （ 1 ）文中所得出的速度分佈與濃度分佈是在明渠兩相流動情況下推得的，由於污水管道流動多為重力流，是明渠流中的一種，所以文中的分析在認識污水流動特性方面具有一定的參考價值。
  15. In the suspended sediment transport model, the method of shear stress is adopted to determine the source function in the suspended sediment diffusion equation. through a series numerical experiments and statistical analyses of observed field data, a local coefficient, which can reflect the bottom material and consolidation, is introduced into the classic critical erosion velocity of the sediment

    懸沙輸運模型利用切應力方法來確定對流擴散方程中的泥沙源函數，其中的臨界起動速度利用經典的泥沙起動流速公式前面增加一個局地系數得到，這個系數能反映河床底質結構及固結程度，通過系列數值試驗和實測資料的統計分析確定。
  16. Ann is a adaptive and non - linear dynamic system made from superposition of many simple components which we call neuron. the question for computation of d _ ( cmax ) belongs to incipient motion of sediment in essence, which is the same question with two different sides, because computation of critical condition ( including critical velocity critical shear stress critical power ) for a grain size under a bed - load condition is equal to computation of a grain size during incipient motion under the bed - load condition and the water flow condition given before. and computation of gross bed - load transport rate has great relationship with standard of incipient motion

    對于d _ （ cmax ）的推求，在本質上還是泥沙的起動問題，因為尋求某種床沙條件下某級泥沙的起動條件（如起動流速、起動切應力、起動功率）和尋求某種水流和床沙條件下的起動粒徑是同一問題的兩個方面而已；而對于推移質總輸沙率推求也和泥沙起動問題中的起動標準選擇緊密相關。
  17. The shape of model sand particle play an important role in submarine rest angle, starting speed, bulk specific weight and some other physical characters

    摘要顆粒形貌對模型沙的水下休止角，起動流速、堆積密度等性能有顯著影響。
  18. It is concluded that the critical velocity could be calculated by sharmov formula and the percentage of immobile particles of the bed should be considered for calculating the transport rate

    結果表明，可以採用沙莫夫公式計算起動流速，計算輸沙率應考慮床面不動顆粒所佔比例的影響。
  19. On the basis of time lag differential equation, the car following model were constructed. using average acceleration index, the car following behavior were classed three phases with dynamic classing methodology, start acceleration car following phase, stable car following phase, and deceleration brake phase

    文章以平均加速度為指標，利用動態聚類的方法，把城市快速道路交通流中的跟車行為劃分為三種狀態進行討論，即起動加速跟車狀態、穩定跟車狀態、減速停車跟車狀態。
  20. In this paper, wastewater is looked on as solid - liquid two - phase flow. firstly, the sedimentation of the particles in fluid was analyzed, and some equations was induced under different flow conditions. this set a base for the velocity in the next chapters

    本文將污水視為固液兩相流，首先對顆粒在流體中的沉降理論進行了分析，從中得出沉降速度在不同流動狀態下的表達式，為後面分析顆粒的起動、揚動、止動流速與管道運行臨界不淤流速打下了一定的基礎。
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