frequency method 中文意思是什麼

frequency method 解釋
次數法
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • method : n 1 方法，方式；順序。2 （思想、言談上的）條理，規律，秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. The methods of direct measurement with low precision such as frequency and time interval methods and the methods of indirect measurement with high precision such as beat frequency method, dual mixer time difference method and frequency difference multiplying method are supported on the platform. the fundamentals of each method are studied. the quantization error is analysed and the illustration is given for each method

    該平臺支持直接頻率和時差法兩種較低精度的測量方法以及雙混頻時差法、差拍頻率法和頻差倍增法高精度的簡接測量方法，本文研究了各種測量方法的原理，對各種測量方法的量化誤差作了分析，並給出具體的實例。
  2. Photographic sound record ; difference frequency method for measurement of non - linear distortions

    攝影錄音.測量非線性失真的差頻法
  3. In this paper, we study an alternative approach by numerical calculation. at first, we introduce the fundamental principles and the basic components of the electron linear. second, we introduce a way of coupler testing - - three frequency method. and present a example of coupler testing. third, we use numerical calculation method to simulate several accelerator structures. the hfss code and mafia code is used to simulate a three - cavity accelerator structure. the two results are compared

    因此，尋找好的方法來設計加速結構耦合腔很重要。本文首先介紹了電子直線加速器的各相關基本理論和其基本組成部件。接著，介紹了現階段耦合腔測試中常用的一種方法? ?三頻法，並給出了測量加速器耦合腔的實例。
  4. The scrambling and descrambling technologies include non - disturbing frequency method, analog base band disturbing method, the radio - frequency signal disturbing method, the digital disturbing method for the analog signal and the digital signal disturbing method, etc. after the introduction a project based on the compression of the rf synchronous information is formulated

    本文綜述了目前常用的幾種主要的電視信號的加解擾技術，如非擾頻加解擾技術、模擬基帶加解擾技術、射頻信號加解擾技術、模擬信號的數字處理加解擾技術以及數字信號加解擾技術等。
  5. Based on the magnetic field data, this paper presents a double - frequency method to separate eddy current lossand hysteresis loss from iron loss, then different methods are used to calculate the two losses separately

    在磁場計算所得數據的基礎上，本文提出了採用雙頻法分離出sr電機鐵損中的渦流損耗與磁滯損耗，並分別採用不同的方法計算出這兩種損耗。
  6. Identification of time - varying modal parameters by a linear time - frequency method

    應用時頻分析方法辨識時變系統的模態參數
  7. The force control of suspension bridge anchorage cable is the main contents which will be researched. according to the character of suspen - sion bridge anchorage, three questions is solved in this paper on the basis of the construction control experience of the highway bridge of yichang yanzhi river. firstly, an effective method of cable force control is presented in this paper, which has settled the puzzle of cable force accurate operate through fixing a pressure transducer at the behind of the hydraulic jack. secondly, an exactitude calculation model is founded in this paper. in addition the influence of boundary condition, sag, inclination, flexural rigidity and environment temperature to the cable vibration frequency which make the frequency method could be used to the measurement of cable force. in the end of this paper, a control system of anchorage cable force is developed on the basis of the above research. this system is very steady, credible, high precision and convenient. it is a new and credible method to be used to the force control of sus - pension bridge anchorage cable. in this paper, the conundrum of cable force control has been solved. the fruits are very useful to the development of inland suspension bridge

    提出了一種有效可行的錨跨張力控制方法，即通過在油壓千斤頂后加壓力傳感器，並利用單片機技術進行數據採集，解決了懸索橋錨跨索股初張力精確控制的難題；建立了錨跨索股索力的精確計算模型，分析了索股的邊界條件、斜度、垂度、抗彎剛度及環境溫度對索股頻率的影響，解決了弦振法在大跨徑懸索橋索力測試中的應用問題；在上述研究成果的基礎上，研製出了錨跨張力控制系統，該系統具有穩定可靠，精度高，使用方便等特點，它的投入使用將為我國今後大跨徑懸索橋錨跨張力控制提供一種全新的、可靠的手段。
  8. In this thesis, an algorithm based on multiple features for recognition of escherichia coli promoter was proposed. firstly, word frequency method was utilized to extract the content ’ s information of a given sequence, and position weight matrix and hidden markov model were applied to analyze the information on structure, and then this information was input into a classifier

    本文提出了一種基於多特徵的大腸桿菌啟動子判別演算法，即通過詞頻分析獲得序列的組成特徵，利用位置權重矩陣（ pwm ）和隱馬爾科夫模型（ hmm ）獲得序列的結構特徵，然後輸入到一個分類器中進行分類。
  9. In this paper, the fundamentals of cable forces by frequency method are introduced. the curve fitting method is utilized to get the correcting formula of cable forces and frequency through the experiment. on the other hand, a kind of catenary line cable element is introduced in this paper, owing to the inaccuracy caused by correcting struss element in fem

    本文還介紹了頻率法測索力的基本原理，並通過試驗，利用曲線擬合法得出索力頻率之間的修正關系式；其次，由於有限元計算中，索元所採用的修正桿元所帶來的不精確性，對于長索其精度更難保證，因此，本文介紹了一種計算精度高、工作量小的懸鏈線索元。
  10. At the doppler centroid aspect, this paper make use of maximum value method ; energy method and autocorrelation function method to estimate doppler centroid. at the doppler frequency aspect, this paper make use of image offset method ; time - frequency method ; minimum entropy and fractional fourier transformation method to estimate doppler frequency rate

    在多普勒參數估計中，採用了最大值法、能量法和自相關函數法進行多普勒中心頻率估計;採用了圖像偏移法、時頻分析法、最小熵法和分數階傅里葉變換法進行多普勒調頻斜率估計。
  11. Faraday rotation spectra was measured on samples with model cgx - 1 fr test apparatus by ourselves using the magneto - optical modulated double - frequency method. the development on magneto - optical material and devices, especially on rare - earth ion garnet, were reviewed. as a solution to the problem for temperature stabilized and wideband magneto - optical materials which could satisfy the development of magneto - optical devices for integration and miniaturization, a modified liquid phase epitaxy ( lpe ) technique was brought forward to grow thin film yb3fe5o12 onto substrate ybilg or thin film ybilg onto sustrate ybig

    本論文工作包括對ybiig 、 ybig系列石榴石薄膜制備的實驗構想、相圖分析、制備工藝分析和配方設置，搭建了液相外延設備；比較系統地研究了ybiig 、 ybig系列石榴石薄膜的生長、測試，首次成功制備了ybig ybiig 、 ybiig ybig ggg系列復合膜，並採用xrd 、 sem 、 epma等方法對所得樣品進行了結構、組分和微區形貌分析，用紫外可見光光譜儀測試了其在可見近紅外波段光吸收。
  12. This thesis describes the three important methods for designing pid controller : imc - based method, frequency method and direct synthesis method. we respectively design the pid controllers for the first - order plus dead - time processes, second - order plus dead - time processes, non - minimum phase processes, integrating and unstable processes, then, performance assessment and robustness metrics are used to compare the pid controllers of the individual process

    論文著重研究了pid控制器的三種重要設計方法：內模法、頻域法和直接綜合法，並從確定性性能指標和魯棒性性能指標的角度，比較這些設計方法在一階加純滯后、二階加純滯后、非最小相位、積分和不穩定過程pid控制器設計中的應用效果。
  13. Petroleum and liquid petroleum products - determination of density for metrological purposes - oscillation frequency method

    石油和液化石油產品.計量用密度的測定.振蕩頻率法
  14. Furthermore, there are complex structures such as the engine fans at the end of the inlets. it ' s hard to deal with such problems if we use high frequency method or low frequency numerical value method only

    對于厘米波段雷達而言，進氣道屬于電大尺寸目標，其終端有渦輪葉片之類的復雜結構，單用高頻近似法或低頻數值法都難以解決。
  15. Texture is an important image feature that is hard to describe. the analysis methods mostly include statistic method, structure method and frequency method

    紋理是圖像中一個重要而又難于描述的特徵，通常採用統計方法、結構方法以及頻譜方法進行分析。
  16. In chapter 3, the time and frequency method of vibration signal processing is brought out. and using these method the slag characteristic parameter is brought out

    第三章利用振動信號處理的時域和頻域方法，對鋼流振動信號進行了分析處理，提取出了鋼渣特徵參數。
  17. Non - destructive testing ; eddy current testing of pipes and tubes ; general remarks on testing using concentric test coils and the single - frequency method

    無損檢驗.管道和管子的渦流檢驗.用單頻率法和同心試
  18. Experiments show that the frequency method as gabor wavelets is better than the method which extract texture feature in space

    實驗表明在頻率域提取紋理特徵gabor小波的方法優于在空間域利用共生矩陣提取紋理特徵的方法。
  19. Soft starters decline only the electric voltage and do not decline the frequency, and make the starting torque turn small, therefore the soft starters be applicable only to the induction motors which drive the low starting torque machine such as blower fan and pump. this paper designed a soft starter adopting the discrete frequency method to start induction motors. it declines not only the electric voltage, but also makes the frequency lower at the same time, so starting torque turns more

    由於軟起動器只降壓不降頻，電機的起動轉矩較小，所以傳統軟起動器只適用於風機、水泵類低起動轉矩的負載。本文設計並研製了一種採用分級變頻方法的新型軟起動控制器，在降壓的同時實現有級變頻，從而提高了異步電動機的起動轉矩。
  20. A combined time - frequency method and a reassigned method are proved to get better isar image. 4

    4 、研究了導彈及突防誘餌的多目標isar成像。
分享友人
分享到 Line

分享到臉書