超橢圓的 的英文怎麼說
中文拼音 [chāotuǒyuánde]
超橢圓的
英文
hyperelliptic-
They not only inherit the advantages of bezier curves and b - spline curves, also can be used to represent straight lines precisely and some remarkable transcendental curves precisely, such as circular arc, ellipse, cardioids and twisted pair line etc. especially, the uniform t - b - spline curve of three degrees is smoother than b - spline curve and c - b - spline curve of the same order
此外由於它們還具有三角函數的優點,故既可以精確表示直線段、二次多項式曲線段又可以精確表示圓弧、橢圓弧等二次曲線以及心臟線、雙紐線等超越曲線。特別地, 3次均勻t - b樣條曲線曲面比同階均勻b樣條( c - b樣條)曲線曲面具有更高的光滑度。From green part, transition color part to yellow part of variegated leaf from h. " so sweet ", the changing ultrastructure of chloroplasts is roundness from ellipse, granum - thylakoid swelling, vesicle bringing and osmiophile globule adding
在花葉玉簪品種h . 『 sosweet 』葉片的葉綠體超微結構中,從綠色部分?過渡色部分?黃色部分出現由橢圓形轉變為圓形、基粒類囊體腫脹、囊泡產生和噬餓顆粒增多的趨勢。The movement inbeing of the ultrasonic motors, two type form method of elliptical movement are deeply investigated. its driving mechanism is studied also by geometric method. the ordinal progressing condition of a forced traveling wave in the elastic plate is investigated
研究了超聲波馬達的驅動機理,對超聲波馬達驅動的本質? ?橢圓運動的兩種形成方法進行了詳細研究,利用幾何分析法研究了行波超聲波馬達的傳動機理,分析了定子彈性體中行波有序傳播的條件。Being a sort of new principle micromotor in the fronitier of science. the ultrosonic motor ( usm ) is developed at recently twenty years. utilizing the stator surface particle elliptical motion excited by piezoceeramics, the usm is drived by friction force between the stator and rotor. compared with the conventional electromagnetic motor, the ultrasonic motor has the following features : high speed, high holding torque when power is off and so on. because of it ' s characteristics, the ultrasonic motor has obtained some widespread application in robots, precise instrument, house electronical appliance, sapceecraft automobile and micromechanism
超聲波電機( ultrasonicmotor )是近二十年來發展起來的一種新原理電機,其原理不同於傳統的電磁型電機,它是利用壓電陶瓷的逆壓電效應使定子的表面質點產生橢圓運動,通過定子和轉子之間的摩擦力驅動轉子運動。這種新型的電機與傳統電磁電機相比,具有響應快、不受電磁干擾、結構緊湊、低速、大扭矩、斷電自鎖等優點,因而在微型機械、機器人、精密儀器、家用電器、航天器、汽車等方面顯示出廣泛的應用前景。Partial blind signature based on elliptic curve cryptography ensures that the e - cash is valid only in the period issued by the bank according to the withdrawal protocol, and the historical record of the e - cash that exceeds the valid period will be removed, which greatly reduce the amount of traffic and effort of calculation and improve the efficiency
在取款協議中採用基於橢圓曲線的部分盲簽名方案,使電子現金包含由銀行頒布的有效期,超過有效期的電子現金歷史記錄將被清除,這樣減少了通信量和計算量,提高了執行效率。Its security is ensured by the difficulty of elliptic curve ' s discrete logarithm problem by means of the exclusion of supersingle and anomalous elliptic curves and the adoption of a big prime ( more than 160 bits ) for the order of base - point in elliptic curve in this scheme of data encryption
加密方案中沒有使用超奇異橢圓曲線及異常橢圓曲線,橢圓曲線上基點的階為大素數(長度160比特) ,保證了橢圓曲線離散對數問題的難解性,從而最終保證了整個方案的安全性。In chapter three, we consider the finite volume element mstheods for nonlinear hyperbolic problems on the basic of the chapter three, optimal order error estimates in the h1, l2norms and w1, almost optimal error estimates in l are also demonstrated
在第二章的基礎上也得到了h ~ 1 , l _ 2和w ~ ( 1 , )誤差估計以及l _最優誤差估計和近似解和真解的廣義橢圓投影間的超收斂估計。In chapter two, we consider the finite volume element methods for nonlinear parabolic problems optimal order error estimates in the h1, l2norms and w1, almost optimal error estimates in l are demonstrated. moreover superconvergence in the error between the approximate solution and the generalized elliptic projection of the exact solution is also shown
第二章考慮非線性拋物方程的初值問題的體積有限元法,並證明了h ~ 1 , l _ 2和w ~ ( 1 , )誤差估計以及l _最優誤差估計,而且還得到了近似解和真解的廣義橢圓投影間的超收斂估計。Shared verification signature scheme based on hyper - elliptic curves cryptosystem
基於超橢圓曲線密碼的共享驗證簽名方案Ultrasonic motors are a new kind of solid actuators that come into being since 1980 ’ s, which use inverse piezoelectric effect of pzt to excite stator ’ s elliptical vibration and produce driving power by frictional coupling
超聲波馬達是上世紀80年代開始發展起來的一種新型驅動器,它是利用壓電陶瓷的逆壓電效應激勵出定子表面質點的橢圓軌跡振動,依靠摩擦耦合來實現驅動。The established contact model has provided good explanation for the phenomena of the reduction of frictional coefficient induced by longitudinal ultrasonic vibration and has great academic significance in proposing friction reduction technology based on elliptical ultrasonic vibration
對該模型的分析很好地解釋了縱向超聲振動所引起的摩擦系數降低的現象,為提出利用橢圓軌跡超聲振動來實現減摩奠定了理論基礎。In order to realize smooth movement of mechanical system at a low velocity, the following work investigates new types of linear ultrasonic motors and antifriction technique by superposing the motor ’ s elliptical vibrating motion at the friction interface to change frictional characteristics, produce ultrasonic lubricant effect and realize active control of friction force
本文研究新型超聲波馬達,利用其產生於摩擦界面的橢圓軌跡超聲振動引起的潤滑效應和摩擦接觸行為的改變來減小摩擦力的大小,完成對摩擦力的主動控制,實現機械繫統的低速平滑運動。The chemical composition, micro - structure and optical properties and its application of tio2 thin films deposited on k9 glass by using reactive electron - beam evaporation ( reb ) are studied through sem, tem, xps, xrd, spectroscopic ellipsometry ( se ) and uv - vis spectrophotometer in the dissertation, and the progresses of nucleation and growth of thin film are discussed from the point of view of dynamics and thermodynamics so that a structure model of tio _ ( 2 ) thin film is brought forward
本文採用sem 、 tem 、 xps 、 xrd 、橢圓偏振儀( se ) 、 uv - vis分光光度計等分析手段系統地研究了電子束反應蒸發方法在k9玻璃上制備tio _ 2薄膜的成分、結構和光學性能以及tio _ 2薄膜在光學多層膜中應用,並開發了膜系設計軟體。文中還從動力學和熱力學角度分析了tio _ 2超薄膜的形核生長過程,得出了tio _ 2薄膜的組織結構模型。Nontrivial solution for a semilinear elliptic equation
一類超線性橢圓方程的非平凡解According to the constitutive relationship in linear piezoceramics, elliptical crack problems in impermeable case are analyzed with hypersingular integral equation method
摘要在線性壓電陶瓷本構關系和裂紋邊界絕緣的框架下,用超奇異積分方程的方法對橢圓類片狀裂紋問題進行了重新研究。Unknown displacement and electric potential jumps in the integral equations are approximated with a product of fundamental density function and polynomials, in which the fundamental density function reflects singular behavior of electroelastic fields near the crack front and the polynomials can be reduced to a real constant under uniform loading
超奇異積分方程中的未知位移間斷和電勢間斷近似地表示為基本密度函數與多項式之積,其中基本密度函數反映了橢圓片狀裂紋前沿電彈性場的奇異性,而多項式在均布載荷作用下可用一個常數來表達。There are many papers ( cf [ l ] - [ 3 ] ) have studied the method and error estimate for boundary integeral equation and elliptic boundary value problems, and obtain some superconvergent results by varied post - processings such as interpolation, average and extrapolation etc. in this paper, we mainly study the galerkin solution for first - kind boundary integeral equation and elliptic boundary value preblem. further more we can obtain superconvergence results by ( l _ ( 2 ) project ion ) least - squares processing for derivative of elliptic boundary value problems
對于邊界積分方程與橢圓邊值問題的解法及誤差估計已有很多文章(參[ 1 ] - [ 3 ] )研究,並且通過各種后處理如插值、平均、外推等得到一系列的超收斂結果,本文則著重探討一型邊界積分方程galerkin解通過l ~ 2投影(最小二乘)運算元處理后以及橢圓邊值問題的導數進行l ~ 2投影(最小二乘法)處理后可獲得超收斂結果。Although the elliptic curve used to bulid cryptosystem is ideally non - supersingular, it is difficult to judge the elliptic curve is non - supersigngular or not
用來建立密碼體制的橢圓曲線最好是非超奇異的。因此,在選擇橢圓曲線的時候,一般使用構造法。In this study, on the base of the present status and future development of semiconductor materials for solar cells, we have carried out the work to compose film structures of si - based materials by theoretical analysis and experimental methods, which have potential application in modules of solar cells. the processing, features of microstructure and optical properties of the designed si - based thin films have been studied in detail by employing methods of xrd, sem, afm, tem, raman, ftir, uv - vis, pl, and ellipsometry spectroscopy ( se )
本文在全面總結目前太陽電池材料的研究現狀和其未來發展趨勢的基礎上,系統地從理論和實驗兩方面對應用在太陽電池板上的si基薄膜材料的結構進行了設計,用超高真空磁控濺射儀研究了其制備工藝,用了xrd 、 sem 、 afm 、 tem 、 raman 、 ftir 、 uv - vis 、 pl和橢圓偏光儀( se )等分析手段研究了薄膜的相結構、微觀組織特徵和其所具有的光性能。Using the regularized greens functions and a duality argument, it is proved that the mixed finite element method proposed in this paper possesses the superconvergence by almost one order maximum norm estimates for the l2 projection of the function and quasi - optimal maximum norm estimates for the associated vector function for a strongly nonlinear second order elliptic problem
本文利用正規格林函數及對偶論證技術證明了一類強非線性二階橢圓問題混合元方法對函數的l2投影具有幾乎超收斂一階的最大模誤差估計,對伴隨向量函數具有擬最優最大模誤差估計分享友人