弦長度 的英文怎麼說

中文拼音 [xiánzhǎngdù]
弦長度 英文
chord length
  • 長 : 長Ⅰ形容詞1 （年紀較大） older; elder; senior 2 （排行最大） eldest; oldest Ⅱ名詞（領導人） chief;...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 長度 : length; longitude; size; extent; footage
  1. The mendable canny operator based on the linear interpolation is used to pick up the edge of the pointer, the pointers ’ instructive direction is gotten via the circumference chord length detection method proposed by the article, then according to the central angle of pointer relative to the benchmark and conjunctive relation, the right reading is received the database information management system realizes the consumers ’ water fee management

    利用基於線性插值的canny運算元提取邊緣，通過本課題提出的圓周弦長灰度檢測法得到指針的指示方向，進而依據指針相對于基準的圓心角和關聯關系正確讀數。數據庫信息管理系統實現對用戶用水信息的管理，主要功能分三大模塊:一
  2. Realistic signals are made by summing sine waves of lots of frequencies, so that after some finite number of wavelengths they interfere destructively and you get a signal of finite width and duration

    現實中的信號由各種頻率的正弦波組成，因此，在有限的波長數后，它們會干涉相消，你就得到一個有限寬度和有限延續的信號。
  3. The stability behavior of kiewitt ' s suspen - dome was analyzed on the initial state. by the geometrical nonlinear finite element method, the equilibrium path is traced using the cylindrical arc length technology and incremental newton - raphson method. the influence of kinds of parameters is studied

    採用非線性有限元理論，結合牛頓荷載增量法和柱面弧長法的跟蹤技術，對kiewitt型弦支穹頂結構進行了考慮幾何非線性的全過程分析；為了掌握各個參數對靜力穩定性的影響程度，進行了參數分析。
  4. Considering the similitude law for shaking table test, we study the test results and obtain some conclusions which are a ) generally, the silty soil in test box liquefies and the liquefied time has relation with the amplitude of acceleration, b ) when the intensity is on and above eight degree, the silty soil deposit will be liquefied dramatically, c ) the relationship of the pore water pressure is relevant to the cycle loading which represents when the cycle loading ranges from little to great, the relationship is represent as a concave curve, or else as a protruding curve and tends to stability. ( 3 ) based on the triaxial compression test and the resonant column test, some studies are made such as a ) the duncan - chang parameters of constitutive model, b ) the dynamic shear modulus ratio and c ) the damping ratio of the site soil deposits. in order to deal with the test data, a computer program is compiled

    （ 2 ）利用小型振動臺進行了k _ 0固結狀態下粉土的振動液化模擬研究，通過分析正弦荷載作用下的試驗資料，驗證了粉土的孔隙水壓力增長模式的合理性；從微分方程推導了基於土體振動臺模型試驗的相似律，並從模型實體、孔壓時程曲線和相似律等方面做出了分析，得出了如下結論：在小型振動臺試驗中，模型箱中的粉土都發生了液化，液化的時刻和輸入加速度幅值有關，而對頻率的變化不太敏感；粉土在相當於8 9度地震烈度的加速度幅值作用下可能產生嚴重的液化；孔壓的增長曲線形狀與施加的荷載有關：當施加荷載為由小到大的形式時，曲線形狀為上凹的曲線；當施加荷載為等幅的正弦荷載或荷載幅值由大到小時，曲線形狀為上凸的曲線，且逐漸趨于穩定。
  5. For a string of specified length, tautness and density only certain note can be generated.

    一根確定長度、松緊和密度的弦只能發出某某音。
  6. The newly completed hall of national agricultural exhibition center has a length of 152. 5m, width of 86m, exhibition hall area of 13, 000m2 and highest point of 15. 6m

    剛剛新建的北京全國農業展覽館?新館採用大跨度獨立柱基張弦式管橋架結構，長152 . 5米，寬86米，展廳面積13000平方米，最高處達15 . 6米。
  7. Several key techniques of carving and milling machine cnc system are deeply studied they include : the transformation, data rebuild and interface design of huge volume nc program produced by cam ; the algorithm of cubic parametric spline pre _ interpolation and high speed real time interpolation in the cnc system, which. will gain a much higher surface precision and cutting speed ; methodology and algorithm of movement velocity acceleration control on a real time forecast _ and _ prejudge basis is designed. therefore, a smooth movement is insured. the shake and noise problem caused by non _ uniform pules for driving stepping or servo motor is solved by an improving algorithm to generate uniform pules

    同時，本文對基於統一的pc平臺的雕銑機數控系統中的幾項關鍵技術進行了深入的研究，包括： cam生成加工程序的傳送、接收、讀取及其加工鏈表的生成和實時重構；對cam生成的離散數據進行三次參數樣條插值和基於累加弦長的三次參數樣條插補控制，保證加工工件表面的精度和光順性；設計具有「前瞻」功能的自動升降速控制方法，保證加工過程的平穩性；通過脈沖均勻化，有效地解決加工過程中因為脈沖不均勻而引起的震動問題。
  8. Biology, etc. owing to many merits has not yet been used to measure parameters of gratings. the paper researches on the subject in view of current lack of it. the main tasks of the paper include : analyzing ellipsometric characteristics of gratings in detail with vector diffraction theory and ellipsometrics ; devising a reflective quarter wave plate at normal incidence according to some ellipsometric characteristics ; making use of normal simplex algorithm during ellipsometric inversion of gratings parameters, inversing ellipsometric parameters with gaussian noise of different standard deviations to simulate actually measured values with examples of isotropic metallic and anisotropic step gratings and testing that ellipsometry about gratings parameters is feasible with the range of certain precision ; discussing choice of incidence angle at length

    本論文的主要工作包括：結合光柵的矢量衍射理論和薄膜的橢偏理論，詳細分析了光柵的橢偏特性；並且根據一些橢偏特性設計出一款正入射反射型單波長1 4波片；在光柵參數的橢偏反演中，引入正單純形法作為反演演算法，分別以各向同性的正弦形金屬光柵和各向異性的階梯型光柵為例，在標準橢偏值的基礎上加入不同偏差的高斯噪聲來模擬實際的橢偏測量值進行反演，在一定精度范圍內得出滿意的光柵參數，說明光柵參數的橢偏測量是可行的；還就入射角的選取問題進行了一定的探討。
  9. The innovation in this paper is list below ( 1 ) use rectangle - shape pipeline so that the inducing electromotive force could be enhanced ; ( 2 ) use alternating current whose frequency is adjustable to induce the magnetic ; ( 3 ) make the flowmeter intelligent by use the microprocessor ; ( 4 ) finish designing the ls flowmeter with utra - low power consumption

    本文的創新之處在於採用矩形測量導管大大增加微流量條件下的感應電動勢；採用輸出頻率可調的正弦波電流作為勵磁電流達到消除50hz頻干擾和減少正交干擾的目的；利用單片機等高端現代電子產品實現了電磁流量計的高度智能化及設計出真正的超低功耗的、可用干電池長期供電的ls旋轉流量計。
  10. The influence of some design parameters, such as density of net, rise - span ratio, height of strut, prestressing tension of cable, are analyzed, some economical and reasonable optimized parameters were gotten

    分析了網格密度、矢跨比、撐桿長度、鋼索預應力值等設計參數對弦支穹頂各項性能指標的影響，得到了經濟合理的設計參數取值范圍。
  11. The tests of e - o applications by our flux ktp has been realized, the results showed : optical waveguides fabricated by using an ion - exchange process, which have an exchange - ion concentration depth profile and refractive - index profile, is close to a complementary error - function distribution, optical homogeneity and device thermal stability is much better. amplitude modulation switch formed by our flux ktp has the contrast ratio of 150 : 1 and insert loss is 2. 5 % at 1064 nm. high quality optical pulse with 1 ns width was cut successfully by using an e - o modulator from a laser pulse with 50 ns width, this modulator had run for three years, and the crystal did n ' t blackened, it showed our low conductivity flux ktp can endure high modulation voltage for a very long time

    Ktp晶體的電光應用試驗表明：用離子交換法製作的電光波導，其離子交換濃度、折射率變化符合餘弦誤差函數，光學均勻性以及器件的溫度穩定性較好；製作的強度調制電光開關，消光比為150 ： 1 ，對1064nm激光的插入損耗為2 . 5 ；製作的電光調制器用於激光脈沖整形試驗，從脈沖寬度50ns的激光脈沖削出脈寬1ns的高質量光脈沖，該電光開關經過長達三年多的使用，沒有出現晶體變黑現象，說明本實驗的低電導率ktp晶體能夠耐受長時間的調制電壓。
  12. Abstract : the curve equation, force calculation and the length of suspension in two conditions of suspended cable are given through the strict derivation using mathematical and mechanical method. the two conditions were the weight of suspension uniformly disturbed along the link and suspension line. the applications are given and the common expressions have some applied value in engineering

    文摘:通過數學、力學推導，給出了懸索自重沿弦線（懸掛點連線）及沿索線均勻分佈兩種情況下的懸索曲線方程、受力計算及索線長度，並給出了工程應用實例，所得結論和公式具有一定的工程應用價值
  13. Meanwhile it can filter the waveform and gather the envelope and calculation the current peak and max steepness of lightning by length of erased magnetic record. thirdly we need analyze the difference of length of erased magnetic record between kinds magnetic tape or pre - recorded sine wave on magnetic tape, and finding the min and max lightning current that can be recorded by magnetic tape. then we confirm the type of the magnetic tapes and the way of installing which fit to the line towers

    同時對該波形進行濾波消噪，提取包絡線計算磁帶消磁長度和雷電流峰值及最大陡度第三部分根據mtlcd得出的數據分析不同雷電流通道下不同磁帶、不同預錄正弦波消磁長度的差異及磁帶可以記錄的最小雷電流和最大雷電流，找到可以在輸電鐵塔角鋼上安裝使用的磁帶及其放置方式。
  14. The main research includes following parts : 1. owing to the shortcoming of the parameter accumulation operation and the slow operation speed of traditional iris localization algorithms, this dissertation investigates a fast algorithm for iris localization based on the detection of the longest chord

    主要研究內容包括以下幾個方面: 1 .針對傳統虹膜定位方法速度慢，需要參數累加計算等缺點，提出了結合虹膜灰度特點的最長弦檢測的快速虹膜定位方法。
  15. Corner detection based on accumulative chord length is invariant to rotation transformations, while the implicitly refining strategy of digital curves can improve computational precision and enhance the reliability of corner detection significantly

    摘要提出基於曲線累加弦長來檢測角點，可以使得檢測結果具有旋轉不變性，隱式精化曲線策略可以顯著改善角點檢測演算法的計算精度，從而增強角點檢測結果的可靠性。
  16. To investigate the aerodynamic design ideas and concrete methods of high performance low pressure turbine ( lpt ) at low reynolds number condition, a new lpt of high load, large chord and proper velocity distribution was designed

    摘要為了探索高空低雷諾數情況下高性能低壓渦輪部件的氣動設計思路和設計方法，通過採用高負荷、大弦長的葉片設計和選擇恰當的葉片表面速度分佈形式設計了一臺新低壓渦輪。
  17. 3 zhang c, cheng f, miura k. a method for determing knots in parametric curve interpolation. cagd, 1998, 15 : 399 - 416. 4 fritsch f n, carlson r e. monotone piecewise cubic interpolation

    文章以四組有代表性的數據為實例，通過定義節點用樣條函數方法構造三次參數樣條曲線，將新方法與向心參數化法修整弦長參數化法和二次精度方法進行了比較。
  18. For the first time, three types of sine structures for wavelength linear scale in grating spectrum instruments are described systematically. the tuning structures for wavelength linear scale in both littrow and littman set - up external - cavity laser diodes are designed

    （ 3 ）首次系統地分析了光柵光譜儀器中的三類正弦機構，分別設計了可實現波長線性標度的littrow和littman外腔半導體激光器調諧機構。
  19. The criterion of microroughness for self - propagating wafer bonding is studied according to jkr contact theory, where the microroughness model is based on a sinusoidal distribution for gap height and gap length

    摘要根據jkr接觸理論，推導出晶片直接鍵合時晶片接觸表面粗糙度需要滿足的條件，其中晶片接觸表面粗糙度的描述是基於縫隙長度和縫隙高度的正弦波模型。
  20. Test methods for communication cable - measurement of actual length of coaxial pair - sine wave method

    通信電纜試驗方法同軸對展開長度測量正弦波法
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