面低函數 的英文怎麼說

中文拼音 [miàndīhánshǔ]
面低函數 英文
surface harmonics
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. The switched capaci tor filter is the counterpart of the continue time analog filter " s sampling, it is more adapted to the miniaturization of the circuit and can realize the higher accuracy transfer function, especially the design of the cmos integrated sc filter based on the biquad have advantage of high accuracy, small area, low power consumption, simple architecture and easy to debug. it has important academic and practical means of the sc filter " s research and design

    開關電容濾波器是連續時間模擬濾波器的采樣時間等效電路，更適合電路的小型化，同時也實現高精度的傳輸函數，尤其是基於雙二階的cmos開關電容濾波器設計具有高精度、面積小、低功耗和電路結構簡單，易於調試等優點，所以研究和設計開關電容濾波器有著重要的理論和實際意義。
  2. This paper first begin with the connotation of virtual instrument technology, study and discuss the criterion and the working theory of usb deeply. on the principle of usb1. 1criterion, using usb interface chip usbn9604 and low consumption mirochip c8051f231, we designed the available interface of usb bus and its controlling software, turn the communicating function based usb bus between computer and testing device. second based on the developed interface of usb bus, using microchip pic16c62 and a mount of relays, we designed the multiswitching scanner and its controlling software to complete the funtion of accesses swithing in testing system. third calling the api function inside the windows using vb programming language, communicat with the impelling program of selected hid, achieve the function of testing instrument with usb interface, complete the development of upside software faced testing. at last, based on the deep studying of pcb testing method, used the developed multiswithing scanner and software faced testing, combinated with necessary testing instrument, we constructed the pcb testing system and analized the testing result simply

    論文首先從虛擬儀器的技術內涵出發，深入研究和討論了通用串列總線usb規范及工作原理，並依據usb1 . 1規范，採用usb介面晶元usbn9604和低功耗微處理器c8051f231設計開發了通用的usb總線介面及其控制固件，實現了通用計算機與測試設備之間基於usb總線的通信功能；其次，在所開發的usb總線介面的基礎上，使用微處理器pic16c62和多路繼電器開關，設計開發出實現測試系統中測試通道切換功能的多路通道掃描器及其控制固件；再次，採用vb語言編程，調用windows內部api函數，與選定hid類驅動程序進行通信，實現usb總線介面測試儀器功能，完成面向測試的上層軟體開發；最後，在深入研究印刷電路板測試方法的基礎上，利用已開發的多路通道掃描器和面向測試軟體，結合必要測試儀器組建印刷電路板測試系統，並對測試結果進行了簡要的誤差分析。
  3. The main works are as follows : 1. the paper systematically describes basic concepts and theories that form the foundation for design of general microwave filters. the topics will cover filter transfer function, lowpass prototype filters, frequency transformations, immittance inverters and the passband insertion loss under the influence of the dissipation of filter elements 2

    現總結如下: 1 .對微波濾波器的設計理論進行系統的分析，闡述了微波濾波器的傳輸函數、低通原型、頻率變換、倒置變換器以及元件損耗對帶內插損的影響等方面。
  4. Imev and the data in which the energy respectively is 166mev 139mev, 104mev, 90mev. on the basis of two wave functions and two optical potentials above mentioned, we have investigated a serie s of knockout reactions : through the comparing of two wave functions and two optical potentials, we find that two a cluster relative vave functions which contribute to the energy sharing results of the reaction sections are very well, especially for the ; that the received spectroscopic factors used vfm ( r ) are better than that used ; that the former not only suits to the elastic scatterings but also to the knockout reactions ; that the a cluster of knockout reactions are its local behaviors of surface. and we further testify that the distorted influences are not neglected if the incidence energies are not very high, but can be used the plane wave impulse approximate method and neglect the effects of the distorted influences if the incident energies are high enough

    在利用上述的兩種束縛態波函數和兩種光學勢的基礎上，我們研究了一系列的敲出反應：通過對比兩種束縛態波函數和光學勢，我們得到的結論是：兩種束縛態波函數和光學勢對反應截面的能量分配譜的貢獻都比較好，但尤以波函數_ （ li ） （ r ）為佳；光學勢v _ （ clu ） + （ r ）得到的光譜因子比用woods - saxon勢v _ （ ws ） （ r ）的結果要好，它不僅能適用於彈性散射，且對敲出反應也能得出比較好的結果；集團的敲出反應是集團表面局域性的表現：在中低能的入射條件下，扭曲效應不能忽略，但入射能量較高時，扭曲效應影響較小，可以用平面波沖量近似的方法。
  5. In the paper, based on the method of low pair replacing with high pair, the problem of cam design was transferred to that of linkage design. by means of rotary unit vectors, the equations of displacement, velocity and acceleration of the replacement mechanisms were developed. and then, the virtual linkage ' s length and direction were deduced

    論文基於高副低代原理，將平面凸輪機構設計與再現函數的平面連桿機構設計統一為同一種方法，運用圓向量函數建立代換機構的位移、速度、加速度矢量方程式，求取虛擬連桿桿長和方向，由此展開凸輪理論廓線、實際廓線、曲率半徑和壓力角的求解，並得出用圓形刀具加工凸輪時刀具中心的軌跡方程。
  6. Secondly, because of the faultiness of these algorithmic routines of dissipation factor in existence, this dissertation puts forward an improved correlation function algorithm based on wavelet analysis, and the improved algorithm focuses on two lesding aspects : one is the methods to reduce noise and distill the fundamental, the other is the means to reduce the errors resulted by frequency fluctuating

    其次針對現有介損計算方法的不足，提出了一種基於小波變換理論的改進相關函數法的介質損耗值計算方法，主要從去噪、提取基波的方法以及降低由於電網頻率波動所造成的誤差兩個方面來考慮。並對此方法進行了模擬分析和驗證了改進演算法的優越性。
  7. As compared with amorphous diamond on si, the reduction of the applied electric field for the electron emission can be effectively improved by using sm / amorphous diamond contact

    我們發現非晶鉆石長在鍍釤的硅基板比單純長在硅基板上的場發射特性更好，主要是因為金屬有相對較低的功函數，可以降低金屬鉆石接面的位障高度。
  8. In the analysis process, the six main peaks in 88 - 100 kev region, including the y peaks of 234th, the k peaks of th and the k peaks of u, are chosen. the smoothly joined gaussian function and low energy exponential tail is taken as peak shape function and quadratic polynomial is taken as background function. the two functions are fitted to gether to calculate the peak area

    在分析過程中，選擇了88 - 100kev能區的~ （ 234 ） th的射線峰， th的k _射線峰以及u的k _射線峰共六個主要能峰，通過採用高斯函數和低能指數尾部光滑聯接的峰形函數和二次多項式本底函數一起擬合，來求出峰面積；而該能區所有能峰的探測效率可以認為是近似相等的，由此得到鈾富集度。
  9. Using the ipga and setting the terminal speed increment of the upper stage and the manufacture cost of cpkm as objective functions, the rocket motor are processed dual - objective optimization design that has six design parameters

    採用ipga演算法，以該運載火箭上面級末速度增量最大及cpkm發動機的製造成本最低作為目標函數，對該發動機進行了雙目標優化設計。
  10. In the part of image preprocessing, a segmentation algorithm for fingerprint image based on the information of gradient orientations was programmed. according to the uniformity and partial parallarity of ridges and furrows of fingerprint, a model of gabor filter was established to enhance fingerprint image. since two - dimensional gabor filter could be separated into two one - dimensional filters, the complexity of the algorithm could be reduced efficiently

    在圖像預處理方面，利用指紋圖像梯度特性進行圖像分割，根據指紋紋線間距均勻且局部平行的特點，建立了用於指紋圖像增強的gabor濾波函數物理模型，並將二維gabor濾波分解為兩次一維濾波，有效降低了演算法的復雜度。
  11. After analyzing the existing ambiguity resolution methods the dissertation investigates the baseline rotation method based on the antenna - swap idea, and develops the fixed axis rotation maximum - minimum method ? farmm and the equivalent rotation maximum - minimum method ? ermm applicable for static basement and moving vehicle respectively. the former lowers the demands on rotation device while the latter improves the flexibility of antennae installation. meanwhile the dissertation also brings forward an ambiguity function search method which needs only one single epoch data with the outer aided information, and investigates the accuracy requirements for the assistant pointing information

    其次，通過與gps等多星系統定向關鍵技術的對比分析，指出雙星定向模糊度確定的難度;在分析現有模糊度求解方法的基礎之上，研究了基於交換天線思想的轉動基線模糊度確定方法，並提出了適合於靜基座的定軸轉動極大/極小值farmm法，以及適合於地面運動載體的等效轉動極大/極小值ermm法，前者降低了對轉動機構的要求，後者則提高了天線安裝的靈活性;同時，提出了一種藉助外部輔助信息的模糊度函數搜索法實現單歷元雙星定向，並分析了對外部輔助單軸姿態信息的精度要求。
  12. According to experiments, lab6, with high conductivity, good heat stability and chemical stability, low work function, and active cathode appearance, has become an ideal material for field emission array cathodes

    經試驗證明，六硼化鑭（ lab6 ）具有高導電率和良好的熱穩定性、化學穩定性、低功函數以及活性陰極表面，因此從理論上成為了場發射陰極的理想材料。
  13. 1 in the research of design of radar waveform, one kind of hybrid radar waveform obtained by combining the chirp waveform with the non - periodic pseudorandom sequences is discussed. through the theoretical analysis and computer simulation, several main characteristics of this kinds of hybrid waveforms are discussed, such as the ambiguity function, ambiguity graph, the spectrum, the weighting methods, the response of the processing filter and the low probability of interception. those are showing the effectiveness of the new hybrid waveforms on the performance of high resolution and low probability of interception

    作者在以下幾個方面的研究工作中取得了進展及創新： 1 、在雷達波形設計中，介紹了一類新的線性調頻信號與非周期隨機編碼信號相結合的組合波形的組合形式，通過理論分析和大量的計算機模擬研究了這類組合波形的模糊函數（圖） 、頻譜特性、多普勒頻移特性、加權輸出特性、低截獲等方面的特點，證明了新型的組合波形在高分辨、低截獲等方面的有效性。
  14. The crucial phenomena of software product are high fixed cost, low varied cost and the inclined - to - zero marginal cost. furthermore, in the market there does not present a certain price function of supply, only exist an area of price - decision

    從軟體產品的供給方面講，其特點是固定成本高，而變動成本非常低，暨邊際成本幾乎為零，另外，軟體產品也不存在特定的價格?供給函數，只存在定價區間。
  15. According as the cultivated land consolidation criterion of yanqing county, the paper planed the standard farm field layout of the flat region and slopping region, and then setted up the function of calculating the cultivated land consolidation criterion coefficient, finally calculated the cultivated land consolidation criterion coefficient for low, middling and high consolidation levels. according as the non - effective coefficient of cultivated land and three cultivated land consolidation criterion coefficient, the article estimated cultivated land consolidation pote ntial for low, middling and high consolidation levels in yanqing county

    依據延慶縣耕地整理標準，規劃設計出平耕地和坡耕地標準耕作田塊平面布局圖，建立了用於計算溝路渠田坎系數標準的函數式，並計算出延慶縣平耕地、坡耕地在低、中、高三種不同整理水平下溝路渠田坎系數標準，最後測算出延慶縣三種不同整理水平下的耕地整理潛力。
  16. This paper is devoted to nonlinear approximation, namely, m - term approximtion of anisotropic smooth periodic functions. nonlinear approximation is the important part of approximation the - ory. it means that the approximants do not come from linear spaces but rather from nonlinear manifolds. the advantages of nonlinear approximation show that one can achieve a given accuracy of approximation while assuming less smoothness on the function in the nonlinear case than is necessary in the corresponding linear approximation. nonlinear approximation is used significantly in many applications, such as image processing, noise removal and the solution of operation equations and so on

    非線性逼近與線性逼近最大的區別在於所用的逼近子空間不是固定的，而是依賴于被逼近的函數其主要優點是對光滑度較低的函數仍可以得到較高的估計階。隨著小波和樣條的廣泛使用非線性（ m項）逼近成為較熱門的話題，它在圖象處理，聲的傳播，運算元方程的求解等方面都有很多應用。
  17. Making use of the powerful capabilities of the pci chip, high - speed data of the dsp platform are transferred both ways at dma mode, and low speed data such as initialization and configuration information are transferred at direct slave mode. this paper shows in detail the workings of pci9054, the configuration of its control register, and the writing of platform driver with api functions provided by the manufacturer

    利用pci介面晶元的強大功能，本文提出了採用dma模式雙向傳輸dsp平臺的高速數據，採用從模式傳輸初始化信息及配置信息等低速數據，並詳細介紹了pci9054的工作方式，控制寄存器的配置以及調用廠商提供的api函數編寫平臺驅動程序。
  18. Prony ' s method is used in transfer function identification, and it is useful for controller design for damping electromechanical oscillations. 3

    最後，把prony方法應用到了傳遞函數的辨識中，為後面阻尼低頻振蕩的控制器設計打下基礎。
  19. Compensating different stock removal of the tool in different lens areas is used to control the accuracy in pre - polishing process. then based on preston theory, corrective polishing with small - tools is optimized and the better removal function is obtained. also a parameter related the radius of curvature is introduced and determined to increase the polishing precision, which is improved by experiments

    採用反饋補償的方法解決彈性模拋光對面形破壞的問題，以控制其拋光精度；運用preston的拋光原理，對小工具的工作方式和參數進行改進和優化，以改善其拋光精度和效率，並獲得了更優的特徵去除函數；提出了被拋光表面面形曲率半徑對工具特徵去除函數的影響，引入並確定一與非球面各處曲率半徑有關的面形調整因子來降低拋光后的面形誤差，並從實驗上獲得驗證。
  20. The performance of similarity indexing structures in high dimensions degrades rapidly. in lower dimensional space, we often use lp - norm to measure the proximity between two points, but in many case the concept of this proximity is never meaningless in high dimensional space. these issues bring high dimensional data mining two challenges

    隨著數據維數的升高，高維索引結構的性能迅速下降，在低維空間中，我們經常採用l _ p距離作為數據之間的相似性度量，在高維空間中很多情況下這種相似性的概念不復存在，這就給高維數據挖掘帶來了很嚴峻的考驗，一方面引起基於索引結構的數據挖掘演算法的性能下降，另一方面很多基於全空間距離函數的挖掘方法也會失效。
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