流向和流速 的英文怎麼說

中文拼音 [liúxiànghéliúsù]
流向和流速 英文
set and drift
  • 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...
  • 和 : 和動詞（在粉狀物中加液體攪拌或揉弄使有黏性） mix （powder） with water, etc. : 和點兒灰泥 prepare some plaster
  • 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...
  • 流向 : flow direction流向測量器 flow direction probe; 流向角 [水文] angle of current; 流向圖 flow graph;...
  • 流速 : [機械工程] velocity of flow; strength; [水文] current velocity; current speed; flow rate流速管 pi...
  1. The article is based on nation nature science foundation of china, " biogeochemical cycling of pollutants in complex environments of tidal flats in the yangtze estuary " ( no. 40131020 ). the author chose open tidal flat of dong tang chongming yangtze estuary as research object and set up typical section plane so that under the good condition, the author measured hydrology element, total nitrogen and total phosphor index

    本文依託國家自然科學基金重點項目「長江口濱岸潮灘復雜環境條件下物質循環研究」 （批準號： 40131020 ） ，選擇了長江口崇明東灘敞開型潮灘為研究對象，設置典型斷面，在平靜天氣條件下，實測了水文、地球化學要素，獲得了水位、流向、流速、 tn及tp等指標6000多個實測數據，著重對長江口潮灘水動力過程、 tn和tp的動力輸移過程進行研究。
  2. Sand has accumulated in a deltaic pattern on both the marine and lagoon sides of the inlets in conjunction with this diminishing current flow.

    隨著水流速度的減慢，砂質物遂以三角洲的形式堆積在進水道面向海洋和瀉湖的兩頭。
  3. Image motion compensation ( imc ) is the key technology of high - resolution space camera. image motion speed is seperated into two vectors in image coordinate for the existence of the drift angle : the forward direction image motion speed and the crosswise image motion speed. in fact, drift angle control eliminates the crosswise image motion speed, so it is a part of image motion compensation

    在空間照相，由於偏流角的存在，使得像移速度在像面坐標系存在兩個分量：前向像移速度和橫向像移速度，偏流角控制本質上是消除橫向像移速度，因此，偏流角控制是空間相機像移補償的一部分。
  4. The strong deviation and intermittence of the velocity and pressure fluctuations are found in the outer region about 3 ~ 4 times of the momentum thickness away from the mixing layer center, which are consistent with those observed experimentally

    與實驗結果相符合，本文研究發現，在混合層邊緣約3 4倍動量厚度附近，流向和橫向速度以及壓力的脈動都存在強烈的偏斜和間歇現象。
  5. Then fourier transformation is employed to solve equations of motion of the rings, bulkheads, stringers and fluid respectively, with their reactions ( moments ) expanded by the shell ' s in - vacuo modes. by means of continuity conditions on the interfaces between the shell and the stiffeners as well as the fluid, and inverse fourier transformation, the modal reactions ( moments ) are finally expressed by the shell ' s modal velocities

    然後用fourier變換分別求解環肋、艙壁、縱骨和流場的運動方程，將它們對殼體的作用力（力矩）用殼體周向模態展開，利用它們與殼體在連接處位移連續條件以及fourier逆變換得到用殼體速度表示的模態相互作用力（力矩） 。
  6. 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。
  7. The verification results show that the model can simulate well the tidal levels, current velocities, sediment concentration, bed load transport, diversion ratio in the bifurcation section, topographic change of the north and south channels, as well as sudden siltation caused by typhoons

    大量實測資料驗證表明，該數學模型可以較好地模擬長江口地區的潮位、流速、流向、含沙量、底沙、分流比、南北槽地形變化和臺風暴潮造成的航道驟淤情況。
  8. By performing fourier transformation, the relationship between the turbulent intensity of the particle and that of the carrier fluid was obtained which makes clear that particle size, specific gravity, velocity gradient, and the characteristic frequency of energy - containing eddies are four basic influencing parameters. it is proven theoretically that under certain conditions, the stream - wise and transverse particle turbulent intensities exceed those of the carrier fluid. based on the equations of two - phase flow, the presence of fine sediment suspension is shown to attenuate the turbulent intensity of the water

    通過對細小顆粒在剪切流場中運動方程的fourier分析，得到了顆粒脈動強度和流體脈動強度之間的定量關系，表明顆粒粒徑、顆粒密度、流速梯度以及紊動場含能旋渦的特徵頻率是影響顆粒脈動強度的主要因素，首次從理論上證明了在一定條件下，顆粒在縱、垂向的脈動強度均會超過相應的流體脈動強度，為已有的實測資料提供了合理的解釋。
  9. Abstract : the processes of thermal - bonding and the features of raw material were breifly described, the temperature, pressure and speed to properties of thermal - bonded fabric were demonstratively related on the basis of three specific trials. futhermore, the authors present a point of view about the developing tendency of themal - bonding technologies for hygienic market after having an analysis upon current market status

    文摘:簡要介紹了熱軋非織造布工藝流程和衛生用熱軋非織造布原料的特點與選擇.通過對3個試驗的描述和對試驗結果的分析，詳細地論證了溫度、壓力和速度對熱軋非織造布性能的影響.根據市場的現狀，發表了對衛生用薄型非織造布生產技術發展方向的展望
  10. Further investigated and analyzed composition structure and flow data that dsa ' s formation of image is systematic at first in this paper, carried on intact summing up to the data in the system, having given out the plan of design of high speed and large capacity data channel of digital formation of image system of x - ray ; deeper discussion of control way on sdram, give solution that many pieces of sdram works togetherses of realizing heavy capacity, designing of heavy capacity deposit board realize storing at a high speed to vision data by frame on the basis of this ; through further investigations of interface of pci bus, optimize back end state machine design and urge procedure making with lower, giving intact pci interface scheme that realize high speed dma data transmission and satisfy request of video transmitting ; further investigate the figure systematic design method of programmable logic devices, due to the difficult point of drifting about of enabled signal in fifo in common use and setting up and keeping of output signal, method has been proposed of improving stability of system making use of signal utilizing the phase locking ring in fpga to offer a lot of clocks to move thus realize coordinating the data between every module of system to transmit at a high speed by making use of fifo

    本文首先對數字減影血管造影（ dsa ）成像系統的組成結構和數據流向進行了深入研究和分析，並對系統中的數據流向進行了完整的歸納和總結，給出了x線數字成像系統中的高速大容量數據通道的設計方案；在對sdram的控制方式做了深入探討后，給出了實現大容量多條sdram共同工作的解決方案，在此基礎上設計了大容量幀存板實現對圖象數據進行高速存儲；通過對pci總線介面的深入研究，優化後端狀態機設計和低層驅動程序開發，給出了完整的pci介面方案實現高速dma數據傳輸，完全可以滿足視頻傳輸要求；深入研究了基於大規模可編程器件的數字系統設計方法，針對通用fifo使能信號漂移、輸出數據難于建立和保持等設計難點，提出了利用fpga中的鎖相環提供多個時鐘相移的信號來提高系統穩定性的解決方案，從而實現利用fifo來協調系統各模塊之間的數據高速傳輸。
  11. In this paper, some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data. the cross section of compound channel can be divided into four regions : the undisturbed region in main channel, the interactive region between channel and plain, the undisturbed region in flood plain and the boundary region. in the undisturbed regions, the distribution of longitudinal velocity along the depth has the feature of lograithmic. whereas, in the interactive region, the longitudinal velocity does not obey the logarithmic distribution law, but it can expressed as a revised logarithmic function by using a wake function. on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained. in the boundary region, the longitudinal velocity obeys the law of parabolic distribution. furthermore, according to the simplified diffusion equation, the transverse distribution of sediment concentration in the interactive region is deduced. the analysis is in good agreement with the measured data

    本文根據漫灘水流的運動特點，將漫灘水流的復式斷面分為主槽平衡區、灘槽交互區、灘地平衡區及邊壁區等4個區，並給出了各區寬度的經驗公式.根據灘槽交互區垂線流速分佈的變化特點，提出了附加尾流函數的對數流速分佈公式.在簡化水流運動方程和泥沙擴散方程的基礎上，對灘槽交互區內垂線平均流速及含沙量沿橫向分佈進行了理論分析，提出了反映灘槽水流動量交換強度的橫向渦量粘性系數及橫向擴散系數的表達式，得到了漫灘水流垂線平均流速及含沙量沿橫向分佈的解析解，並與實測資料吻合較好
  12. Our company is a foreign enterprise specialized in processing every kind of slabs and technological stone products at home and abroad, stone project design, decoration for buildings, self - produce to for import and export, technological consultation service, etc. our company keeps developing with fine quality and high speed of various imported granite and marble depend on advanced technique and management service system

    南安吉洲石業有限公司是集國內外各種板材和石材加工石材工程設計室內外裝飾裝修技術咨詢服務?一體的臺資企業。公司按國際標準將所有的業務流程均採用電腦化作業，始終以市場?導向，以顧客的需求?導向，憑著得天獨厚的花崗巖大理石資源優勢，依靠先進的技術和管理服務體系，以高質和高速的發展。
  13. Design engineers now selecting pmbldc motors over conventional dc or induction motor drives for the following reasons : 1 ) the absence of brushes results in an essentially maintenance free operation and eliminates the undesirable effects of commutation such as sparks, brush - loss, radio - frequency interference, etc. 2 ) the low inertia of the rotor enhances the quality of the mechanical response of the motor, shortening the acceleration and deceleration time. 3 ) utilizing rare - earth permanent magnet materials with high coercive force results in substantially higher efficiency than their counterpart with brushes of the same size. 4 ) because of the absence of commutation segments, the stator construction is simple

    現在的工程師們更為青睞永磁無刷直流電動機是因為以下幾點原因： （ 1 ）去除了電刷的永磁無刷直流電動機徹底地免除了維護而且消除了我們不希望的由於換向帶來的火花、電刷損耗以及無線電干擾等等； （ 2 ）低轉動慣量的轉子提高了電機機械響應的質量，從而縮短了電機加速和減速的時間； （ 3 ）高矯頑力稀土永磁材料的使用使得同樣尺寸的永磁無刷直流電動機比傳統的直流電動機效率高； （ 4 ）由於沒有機械換向部分定子的結構簡單了。
  14. By varying flow velocity and the concentration of hmi ( hg2 + ) in influent water and adding usual cations ( ca2 +, mg2 + ) or anions ( cl -, so42 - ) into raw water, the effects of hmi removal by wbaer and cations exchange resins from dk have been contrasted

    試驗中通過改變流速（通過離子交換柱） 、進水中重金屬離子（ hg2 + ）的濃度以及向原水中引入天然水體中常見的陽離子（ ca2 + 、 mg2 + ）和陰離子（ cl 、 so42 ）等方法，比較了弱堿性陰離子離子交換樹脂和陽離子交換樹脂對飲用水中微量重金屬離子（ hg2 + ）的去除效果。
  15. There were wind shear and maximum wind speed occurred above or below the height of potential instability area and one of them happened before potential instability

    位勢不穩定區所在高度的上方和下方會有風向切變和風速極大值中心，並且風切變或急流中心會早於位勢不穩定的出現。
  16. In order to make the sensitivity of 2 - demension accelerometer along the two main arbors almost identical, symmetric four - beam structure that embeds a double - sides interdigitated differential capacitive with puckered beam in two directions was used as sensitive component. in addition, the differential capacitive accelerometer fabricated by bulky silicon micromechanical technique has high sensitivity, wide measurement scope, less nonlinear error, and simple converting circuit. then, the structure parameters of the sensitive component were calculated and stimulated, which results in a set of the optimized structure design parameters, main fabrication procedure and several key fabrication technology

    為使二維振動傳感器在兩主軸方向的靈敏度大致相同，敏感元件採用高度對稱的四梁結構，其中每個軸向上均採用帶折疊梁的雙側叉指電容結構，採用體硅微機械工藝製作的高深寬比叉指電容式敏感元件，具有高靈敏度、寬量程、非線性誤差小、外圍電路簡單等優點;對設計的敏感元件結構參數進行了計算，並利用有限元法進行了模擬分析，根據模擬結果得出了優化參數;在確定敏感結構的基礎上，研究了敏感元件採用體硅微機械加工工藝製作的工藝流程和關鍵工藝技術;對敏感晶元內部的c - v介面電路進行了原理設計與分析，利用差動測量技術得到由振動引起的微小電容變化量，經c - v介面電路進行相位調制處理，然後通過解調輸出與加速度成正比的電壓信號。
  17. From 1999 onwards, the wind profiler there has superseded the radiosonde released each day at 2 a. m. for providing wind direction and speed

    自一九九九年起，深水氣流剖析儀取代了在香港時間清晨2時發放的無線電探空儀，發出風向和風速的資料。
  18. The hairs flutter in moving water as flags do in moving air, and the way in which they flutter contains information about the direction and speed of the water moving past them

    絨毛在水中就像氣流中的旗幟一樣擺動，它們擺動的方式包含著流經它們的水流方向和流速信息。
  19. The observatory installed the first wind profiler in hong kong at sham shui po in 1996. the aim is to monitor low - level winds in the first few kilometres above the surface, to ensure aviation safety

    天文臺於一九九六年在深水裝置了第一臺氣流剖析儀，主要用於監測地面上空數公里的風向和風速，以保障飛行安全。
  20. Measurement of upper air winds - wind profiler in chinese only

    高空風向和風速的探測-氣流剖析儀
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