改正流速 的英文怎麼說

中文拼音 [gǎizhēngliúsù]
改正流速 英文
modified velocity
  • 改 : Ⅰ動詞1 （改變） change; transform 2 （修改） revise; alter; modify 3 （改正） rectify; correct 4 ...
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 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...
  • 改正 : correct; amend; put right改正液 correction fluid
  • 流速 : [機械工程] velocity of flow; strength; [水文] current velocity; current speed; flow rate流速管 pi...
  1. 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。
  2. When catchment area, average channel gradient and catchment shape factor of designed culvert or bridge are known, a user can be convenient to get local parameters c, e and b from standard contour charts and easy to calculate flood flow just by a calculator. design period of flood flow is enormously shortened as well as a high precision. estimated flood flow through culvert or small bridge by new calculation model is generally less than by traditional methods, so that much cost is cut down a s reducing the span of culvert or small bridge

    以75000km ~ 2的川中丘陵地區為試點研究區，繪制了該地區新模型的參數等值線圖，率定了不同設計頻率的改正系數，使設計者只需在地形圖上獲取集水面積，河道平均坡降和流域形狀系數，在參數等值線圖上查得橋涵所在地的相應參數，使用計算器即可迅速計算出設計流量，大大縮短了設計周期，且精度較高，設計的洪水流量一般低於傳統方法，從而可減小橋涵跨徑，節省投資。
  3. Firstly, we generalize and analyze the advantages and present research of elliptic curve cryptography ; secondly, we study the basic theory of the ecc ; thirdly, we illustrate the safety of the ecc and discuss the elliptic curve key agreement scheme, elliptic curve encryption scheme and elliptic curve digital signature algorithm ; fourthly, we study fast algorithms of the multiplication and inversion multiplication of the element of in the underlying finite field f2m whose characteristic is two represented by the two basis of optimal normal basis and polynomial basis. we make improvements to the fast algorithm of the polynomial basis multiplication by hankerson and base on the experiments, we describe the properties and compare the advantages of the multiplication and inversion multiplication of the elements in f2m field under optimal normal bases and polynomial basis. results concluding from the study car be used as references in the realization of the elliptic curve cryptosystem ; fifthly, we overview the current fast algorithm of point multiplication, improve the fix base point comb algorithm, advance the speed of the whole system and remark the advantages and disadvantages of the popular algorithms based upon the experimental datas ; sixthly we realize the algorithm library of elliptic curve cryptography based on the f2m. only change slightly in our algorithm library can we realize the ecdh, eces, ecdsa based onf2m of anysize ; seventhly, we realize the ecc on two secure elliptic curves, including ecdh, eces, ecdsa

    本文首先介紹並分析了橢圓曲線密碼體制的優點及研究現狀；其次研究了橢圓曲線密碼體制的基本理論；第三，分析了橢圓曲線密碼的安全性並介紹了密鑰共享，加密，數字簽名等橢圓曲線密碼體制；第四，深入研究了特徵為2的有限域f _ 2m中的元素在多項式基和最優正規基表示下的乘法運算和乘法逆運算的快速演算法，並對hankerson等人提出的多項式基下的乘法運算的快速演算法作了改進，而且在實驗的基礎上不僅分析研究了f _ 2m域中元素在多項式基和最優正規基表示下的乘法和乘法逆運算的性能，還對這兩種基表示下的f _ 2m域中元素運算效率的優劣作了比較和研究，所得的結論可供在實現橢圓曲線密碼體制時參考；第五，研究了目前流行的計算橢圓曲線標量乘法的快速演算法，同時改進了固定基點梳形法，提高了整個系統的速度，並在實驗的基礎上分析研究了流行演算法的優劣；第六，實現了基於f _ 2m的橢圓曲線密碼體制的演算法庫，在我們的演算法庫中只需稍微改變便能實現基於任意尺寸的f _ 2m上的ecdh ， eces ， ecdsa等橢圓曲線密碼體制；第七，實現了兩條安全橢圓曲線上的橢圓曲線密碼體制，包括ecdh ， eces ， ecdsa 。
  4. Tides and ocean currents, which remain constant, have no effect on the correction for vehicle speed changes.

    保持不變的潮泛和海流對校正運動體速度的改變沒有影響。
  5. During the period of commercial automatization building, this paper introduces brp, achieves the optimizing of commercial business process and improves the relevant elements. it establishes favorable foundation for the successful application of cmis further apply bi ( business intelligence ), design and primarily develop bis. by developing mis ( management information system ) into dss ( decision support systems ), it can supply decision - making support for the decision - makers of commerce cooperation and make them do the rapid and right decision in the more and more vehement changeable market environment

    本文通過在商業自動化建設過程中引入業務流程重組，實現了商業業務流程的優化及相關因素的改進，為商業管理信息系統的成功應用奠定了良好的基礎；在商業管理信息系統的基礎上應用商業智能，並設計與初步實現商業智能系統，又將管理信息系統進一步延伸到決策支持系統，為商業企業的經營決策者提供決策支持幫助，以便在日趨激烈且多變的市場環境下快速、正確地對市場環境做出反映。
  6. The system can generate three - phase spwm pulses and has following characters : the range of modulation frequency is from 0 khz to 4 khz. and can be divided to 7 classes to control. the carrier frequency may be selected up to 24 khz, and can be divided to 8 classes to control ; rotational frequency is defined to 16 bits

    該系統能產生三相六路正弦脈寬調制（ spwm ）波形;調制頻率范圍為0 4khz ，分7級控制; 16位的速度控制解析度;載波頻率分8級控制，最高可達24khz ;系統介面兼容intel系列和motorola系列單片機;該系統控制簡單、精確，易修改，可現場編程;同時具有脈沖延時小、最小脈沖刪除、過壓和過流保護功能等特點，可應用於pwm變頻調速系統的全數字化控制。
  7. The combination of obtained research achievement and extension effect in the ecological construction of soil and water conservation, sufficient exertion of ecological restoration ability, vegetation rehabilitation and ecosystem improvement widely and rapidly are the most effective approach to resolve the great problems on the slow steps of the prevention and cure of soil and water loss in china radically, which conform to the times

    結合水土保持生態環境建設已取得的研究成果與推廣效應，充分發揮生態的修復能力，大面積迅速恢復植被和改善生態系統，正是順應時代要求，從根本上解決我國水土流失防治步伐緩慢這一重大問題的最為有效的途徑。
  8. It was found that the ultra - fine powder can flow smoothly in a spouted bed with a draft tube under some sorts of design parameter and operating condition, thus a new effective method to improve fluidization quality of the ultra - fine powders is obtained ; at higher supplied gas velocity, an increase in the solid circulation rate is observed ; the extent of the distance between the nozzle and the draft tube inlet result in the promotion of the solid circulation rate ; the solid circulation rate increase with increasing the draft tube diameter or the bed mass ; the gas bypassing is nearly zero in the present work ; and the solid flow in the annulus is observed as a moving bed

    結果表明：在一定的床層結構和操作條件下，超細粉可以在導向管噴動床中實現平穩流化，從而為改善超細粉的流化質量提供了一種有效的新方法；固體循環速率與噴動氣流量、導向管直徑、導向管底部與噴嘴出口間距以及床層裝填量成正比；氣體則基本上不存在「旁路」現象；環隙區中的顆粒流動表現為一移動床特徵。
  9. In addition, the definition of flowing velocity are modified and perfected, testifying the relationship between real velocity and flowing velocity

    此外，對滲流速度的定義進行了改正和完善，並證明了多相流中真實速度與滲流速度的關系。
  10. All the improvements included the modifications on the sound velocity, characteristic mach number and the mach number at the grid interface. several 2d flow fields which had shock, shear flow, rarefaction wave, or turbulent boundary layer and the combination of them were computed

    該格式改進了聲速、特徵馬赫數的處理方式，對網格界面馬赫數進行了修正，並求解了含有脫體激波、斜激波、剪切流、膨脹扇、及湍流附面層等流動特徵的復雜流動。
  11. In 1998, this condition of " " non - management " has been over because of the establishment of sda, and our pharmacy circulation order has been better. but pharmaceutical commerce enterprises are still in slump, which has been the obstacle of high - speed development of pharmacy economy, because our market are in the process of the reform of socialist market economy system and the relationship of different factors has n ' t been coordinated once and for all

    1998年，國家藥品監督管理局成立后，才結束了這種「管理者缺位」狀態，我國的醫藥流通秩序逐漸好轉，但是，由於我國正處于社會主義市場經濟體制改革過程中，各項改革政策的出臺並不同步，各方面的關系沒有從根本上理順，醫藥商業企業仍然處于不景氣狀況，已經成為醫藥經濟快速發展的「瓶頸」 。
  12. With development of high - speed missile imaging detection aero - optical effects, certain accomplishments on theoretical analysis have been obtained. the laboratory test system needs to be built to vertify the correctness and validity of theory. at the same time, to study the transient influence of high - speed flow on image transmission, an aero - optical effect experiment of wind tunnel is needed furtherly on the foundation of the transform of wind tunnel, in order to use the researching accomplishment of aero - optical effects in the aero - optical distortion image adjustment evaluation

    隨著高速導彈成像探測氣動光學效應機理研究工作的深入開展，在理論分析上取得了一定的成果，需要搭建實驗室試驗系統來驗證理論的正確性和有效性，同時為了較真實地研究高速流場對圖像傳輸的瞬態影響效應，需要在風洞改造的基礎上進一步進行氣動光學效應風洞試驗，期望將獲得的氣動光學效應研究工作成果用於氣動光學畸變圖像校正效果的評估。
  13. Its typical applications include mobile games, mobile video program selection, mobile video chatting, and mobile singing, etc. with great improving of the value - added business in the aspects of technical basis and transferring velocity, the flow - media becomes available in the mobile networks, and is a new pet in the value - added business of wireless communication

    手機流媒體是一種實時傳輸數據的方法，通過移動網路在移動手持終端上採用流媒體技術實現的應用，典型的應用實例包括移動游戲、移動視頻點播、移動視頻聊天、移動卡拉ok等。隨著增值業務在技術基礎和傳輸速率方面的極大改善和提高，流媒體在移動網路里也正變得切實可行，成為無線增值內容提供的業務新寵兒。
  14. Logistics industry which is based on high technology has developed rapidly all over the world as a sunrise industry. its development degree has been seen as one of the important symbols to value a country ' s modernization level

    物流產業是以高新技術改造為基礎，整合傳統產業而形成的新興產業，正在全球范圍迅速發展，其發展的程度已經被作為衡量一個國家的現代化水平、產業水平和綜合國力的重要標志之一。
  15. To achieve it the author established a new observation flux linkage based on mras ( model reference adaptive system ), which choose the stator current as comparing signal and can effectively estimate the flux linkage and rotate speed with simple configuration. the speed estimation with speed sensorless is an important trend of modern ac drive

    對磁鏈的觀測採取了改進的u - i積分器，並提出了一種新型的定子磁鏈mras自適應觀測器，以定子電流作為比較信號，結構簡單，能有效地辨識定子電阻，從而真正有效地估計定子磁鏈和速度。
  16. It is a one - way flow control valve which can regulate the flow of compressed air in air passage. it will control forward flow, and not control reversed flow, so as to change the one - way movement speed of executive components such as air cylinder

    單向型流量控制閥，在氣路中調節壓縮空氣的流量，氣源正向流動時節流，反向流動時不發生節流，以改變氣缸等執行元件的單向運動速度。
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