速度橢圓 的英文怎麼說

中文拼音 [tuǒyuán]
速度橢圓 英文
adiabatic ellipse
  • : Ⅰ形容詞(迅速; 快) fast; rapid; quick; speedy Ⅱ名詞1 (速度) speed; velocity 2 (姓氏) a surna...
  • : 度動詞[書面語] (推測; 估計) surmise; estimate
  • : Ⅰ形容詞(卵形) oval-shapedⅡ名詞[書面語] (長圓形的容器) elliptic vessel
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. (快慢的程度) speed; rate; pace; tempo
  • 橢圓 : [數學] oval; oval shaped; ellipse; ellipsoid橢圓規 ellipsograph; [圖] elliptic trammel; 橢圓軌道 ...
  1. In the system, the collimation semiconductor laser - scanned beam scanning two perpendiculars direct of one plane of the measured workpiece at the same time is made. the beams with the dimension information of two perpendiculars direct are processed by the scanning receive system, the high - speed photoelectric transition and electronic data process. two measured results of the diametric directs and ellipse tolerance, etc, parameter, of the turning workpiece on the same plane are obtained by non - contact automatic measurement

    在單向激光掃描檢測技術的基礎之上,提出了一種雙向激光掃描檢測系統,其採用激光掃描檢測技術與特殊光學系統相結合,用準直半導體激光掃描光束對被測工件徑向某一截面的兩個相互垂直方向同時掃描,經掃描接收光學系統、高光電變換、電子學系統和微機數據處理系統,對將攜帶有垂直方向被測量信息的光束進行處理,實現了回轉體工件同一截面兩個垂直方向的徑向尺寸和等參數的非接觸自動測量,解決了同時非接觸測量回轉體零件同一截面兩個徑向尺寸的難題,它具有高,高精和非接觸自動測量等特點。
  2. 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曲線密碼體制的優點及研究現狀;其次研究了曲線密碼體制的基本理論;第三,分析了曲線密碼的安全性並介紹了密鑰共享,加密,數字簽名等曲線密碼體制;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演算法,並對hankerson等人提出的多項式基下的乘法運算的快演算法作了改進,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曲線密碼體制時參考;第五,研究了目前流行的計算曲線標量乘法的快演算法,同時改進了固定基點梳形法,提高了整個系統的,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等曲線密碼體制;第七,實現了兩條安全曲線上的曲線密碼體制,包括ecdh , eces , ecdsa 。
  3. Round these two respects, how to structure security elliptic curve cryptography and the implementations of ecc is first discussed in this paper. then we have analysed especially the scalar multiplication on the elliptic curves, and present a new algorithm to quickly implement the fixed point scalar multiplication according to the idea of interleaving exponentiation algorithm and power division. this algorithm is much faster than fixed - base windowing method ; and a little faster than fixed - base comb method

    圍繞這兩個方面的問題,本文首先討論了如何構造安全的曲線密碼體制和曲線密碼體制的應用;然後重點分析了曲線上數乘運算的快實現,並結合interleavingexponentiation演算法和冪分割的思想,提出一種計算固定點數乘的快演算法,該演算法的計算明顯快于fixed - basewindowing演算法,稍快于fixed - basecomb演算法。
  4. In this paper, the drive theory of the large ratio friction transmission is studied ; a new type elliptical cam wave generator is designed ; the large ratio friction transmission prototype is designed and manufactured ; based on the ansys finite element method software, structure of the elliptical cam is analyzed ; precision index of the manufactured large ratio friction transmission prototype, such as transmission accuracy, least step, stability of the least step, load capacity is measured by the absolute rotary encoder. by analyzing the measurement data and research content, it is think that the new elliptical cam wave generator could overcome a good many problems brought by processing errors, facilitate size precision adjustments, input moment can be achieved in the form of a pure force couple importing ; through this study, " the large ratio friction transmission prototype " could apply in practical engineering basically

    本文研究了大比摩擦傳動的傳動理論;設計了新型凸輪波發生器,設計製作了大比摩擦傳動樣機;用軟體ansys對所設計的凸輪結構進行了有限元分析;用19位絕對式編碼器測試了大比摩擦傳動機構的傳動精、最小步距、最小步距的穩定性以及帶負載能力等各項精指標;對測量數據和研究內容進行了歸納和整理,認為新型凸輪波發生器克服了加工誤差帶來的諸多問題,新型凸輪波發生器可以進行尺寸精調整,能夠達到輸入力矩以純力偶的形式輸入;通過本項研究,基本可以使「大比摩擦傳動機構」在工程中得以應用。
  5. They are applied to different situations and verified by experiments. analysis model of small ap oblique penetrating ceramic / metal light armor is established on the basis of energy model and the assumption of ellipse absorbing the same energy in back plate, giving the predictable formula about ballistic limit velocity. with energy model the optimization design in relation to ceramic / metal light armor is analyzed and the optimal coefficient of ceramic / metal composite armor is gained

    本文的主要研究內容如下: (一)建立了小型穿甲彈垂直侵徹陶瓷/金屬輕型裝甲的動量模型和能量模型,它們分別適用不同情況,並通過試驗驗證;基於能量模型和背板吸能相同假設,建立了小型穿甲彈斜侵徹陶瓷/金屬輕型裝甲的分析模型,給出了彈道極限預測公式;利用能量模型對陶瓷/金屬輕型裝甲的優化設計進行了分析,給出了陶瓷/金屬復合裝甲的最佳優化系數。
  6. Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed

    本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上,以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型,通過攝動方法和有限體積法,首次對各種截面(截面、截面、環形截面、矩形截面)旋轉曲線管道內充分發展流動的流動結構和傳熱特性(包括耦合對流傳熱特性)以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析,詳細討論了各種無量綱參數對管道內軸向分佈、二次流結構、溫分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響,獲得了若干創新性成果。
  7. The body travels in an ellipse, the fixed point being at on focus. the speed is greatest when body is near the focus, less when it is farther away

    物體沿著固定點在一個焦點上的軌道運動。當運動物體靠近這一焦點時其最大,而當它遠離時則變小。
  8. Finally, we propose the third mirror scheme to reflect atomic by using a blue - detuned semi - flattened - gaussian beam ( sfgb )

    顯然,採用半束蘭失諧高斯光束作為原子反射鏡,在相同的反射鏡面積下,可比sgb反射鏡反射更高法向的入射原子束。
  9. The synthetic analysis holds that the conveyance speed of solid phased particles of well drilling liquid moving on the level motioned elliptical linear sieve is again higher than that of circular sieve

    綜合分析認為,鉆井液固相顆粒在平動篩上的運移高於直線篩,在直線篩上的運移又高於型篩。
  10. Longradar offer approximate ten thousand of products of pressure, vacuum, flow, air velocity, temperature, humidity, level and valves, which are commonly applied in the fields of industrial automation, hvac, building autoimmunization control, electric power, petroleum, chemical industry, boilers, water treatment, compressors, freezing refrigeration, food brewage, pharmacy, light industrial, environmsent protec - tion, clean industry etc

    在上游安裝一個帶有蛋形格柵的形流體噴嘴,可以提供一個精確構造簡單的空氣體積測量系統。在噴嘴的出口,空氣釋放時的風分配是一致的靜壓為零。因此,噴嘴上游的總壓力是噴嘴出的壓力-於是就容易計算體積了。
  11. Abstract : tensile reducer is one of the necessary apparatuses during the pipe production process at present. this paper deduces a multi - variation formula by using the energy principle and adopting upper limit method. the formula can be used to calculate the parameters such as the drive power, tensile coefficient, roll speed, depth of exit pipe wall, hole type ellipse etc. the existence of minus drive power has also been theoretically calculated

    文摘:張減機是鋼管生產中不可缺少的設備之一.本文從一般能量原理出發,採用上限法推導出一個多變量公式,利用該公式可求解電機功率、張力系數、軋輥轉、出口鋼管壁厚、孔型等參數,並且從理論上計算出電機負功率的存在
  12. 2 ) we analyse the locomotion equation, trajectory parameter, trajectory ellipse parameter, average angel velocity formula under the condition that we only think about the g - force. we ascertain the relationship of the target place and the moving velocity and flying time by keplei equation, and ascertain the trajectory and the data of the place target landing, finally we analyse the effect on the target trajectory and landing from the earth ' s rotation itself

    ( 2 )分析了在只考慮地球引力情況下的雷達目標運動方程、軌道面參數、軌道參數、平均角公式;通過迭代求解開普勒方程確定了目標位置、目標運動狀態和飛行時間的關系;確定了雷達目標的軌道、落點數據;最後,分析了地球自轉對目標的軌道和落點的影響。
  13. It has been shown by our calculations that conductor loss is greatly reduced under velocity matching with relatively thick coplanar waveguide electrodes and thick buffer layer, but the characteristic impedance can not match with that of the external circuit at the same time, and the modulation bandwidth is confined in this case

    然後,用一般的積分計算了普通共面波導型調制器的有效折射率、特徵阻抗和導體損耗系數。通過計算發現,採用厚電極和厚緩沖層結構,在實現匹配的情況下,可以大大減小導體損耗,但是由於阻抗不能同時滿足匹配,調制帶寬受到限制。
  14. The rotational period of jupiter is about 10 hours, and such a high velocity flattens jupiter at the two poles

    木星自轉一周約需10小時,這樣高的自轉令木星赤道隆起成為形。
  15. First, the basic raster graphics algorithms for drawing 2d primitives are introduced, including edge coherence and the scan - line algorithm of triangle, brush algorithm of thick line ( and its improved method ) and midpoint circle and ellipse algorithm ; and the current situation of the advanced algorithms is also involved. second, the mapping of high level programming language to hardware description language is described, some principles of the conversion of algorithm to state machine are proposed also ; then, the implementation of basic graphics in hardware is discussed in detail, the state machines are drawn in the paper, and the interfaces of hardware are defined, block diagrams too, and the advanced algorithm of conic is proved ; finally, some issues about test are described, the results of simulation and synthesis are given in the last, and some detailed data are displayed in the appendix

    首先介紹了現有的基本圖形生成演算法,包括三角形邊相關掃描演算法,寬直線的線刷子演算法及其改進和形、的生成演算法,同時介紹了加演算法的研究現狀;然後,討論了高級語言描述到硬體描述語言的映射,提出了演算法到狀態機抽象的規律;接著具體討論了基本圖形的硬體實現,給出了各演算法的狀態機圖,介面定義和實現框架,並且從理論角給出了二次曲線加演算法的證明:最後採用軟體工具進行測試驗證,給出了模擬、綜合實現的結果,並在附錄中有詳細的實驗結果數據。
  16. In view of the commonly - used block cipher and public key cryptography, this article focuses on the improvement we have made for the algorithms about aes, dbs, ecc and rsa. based on the dsp chip tms320c6201 from ti company, we have accomplished the speed of 0. 92 usec per aes encryption / decryption, 1. 335 usec per dbs encryption / decryption, and 3

    針對目前信息安全體系中常用的分組密碼和公鑰密碼演算法,本文著重改進了des 、 aes的快演算法實現,並在基於ti公司dsp晶元tms320c6201的系統中實現了0 . 92usec加(解)密一個aes分組, 1 . 335usec加(解)密一個des分組, 3 . 585usec加(解)密一個tdea分組;同時通過改造,使montgomery約化更易於進行并行處理,並通過改進曲線密碼( ecc )底層運算和倍點演算法,使得rsa和曲線密碼的實現得到了極大的提高。
  17. With performance credentials won on oval tracks and drag strips across america, the 1960 pontiac bonneville combined the clean style of california customs with raceproven 389 cubic inch power. the bonneville was at the top of the line for pontiac in the 1960 model year, riding on a 124 wheelbase and a revolutionary 64 wide - track stance that could turn corners as easily as it could turn heads

    從20世紀60年代開始, 1960年版的龐蒂亞克bonneville轎車一經問市,就以其加利福尼亞傳統的簡潔明快的風格, 389馬力的強大動力,在橫貫北美大陸的一個個形賽道上,以風馳電掣般的贏得巨大聲譽
  18. According to fiberglass - reinforced composite material, the propagation modes of lamb wave before and after damage ' s generation is analyzed. ellipse technique is applied to determine damage location. three time delay estimation methods are compared

    針對復合材料板,分析了lamb波在結構損傷前後的傳播;採用了技術來確定損傷位置;比較了三種不同的時延估計方法的損傷定位效果。
  19. Ebu - arrehenius and second - moment turbulent combustion model are used to determine the reaction rate. to consider the influence of heat radiation on the gas temperature and wall temperature, the six flux model is applied to predictions of heat flux distributions. the discretization of governing equations on a non - staggered grid system is performed by hybrid scheme over the control volume, and discretization equations are solved with simple algorithm

    利用型微分方程法和區域法生成三維貼體網格,文中數學模型有紊流模型、紊流燃燒模型和輻射模型,採用k -雙方程模型來預估紊流特性, ebu - arrehenius和二階矩紊流燃燒模型來估算化學反應率,六通量輻射模型預估輻射通量,以便考慮熱輻射對壁溫和氣流溫的影響。
  20. The best process for high quality tio _ ( 2 ) thin film deposited on k9 glass by reb is studied by using orthogonal test method, the se results indicate that the best process for tio _ ( 2 ) thin film deposition is the substrate temperature of 300, the total gas press in the chamber of 2 x 10 ~ 2pa and the deposition rate of 0. 2 nm - s - 1, of which the substrate temperature has influence on the optical properties of the deposited films notably

    文中首先以tio _ 2薄膜的折射率和消光系數為研究對象,採用l9正交試驗法研究了在k9玻璃上制備高光學質量tio _ 2薄膜的最佳工藝條件。偏振儀的測試結果表明,制備tio _ 2薄膜的最佳工藝條件為:基片溫300 ,工作真空2 10 ~ ( - 2 ) pa ,沉積率0 . 2nm ? s ~ ( - 1 ) ,其中基片溫對薄膜光學常數的影響最大,該結果具有較好的可重現性。
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