均方畸變 的英文怎麼說

中文拼音 [jūnfāngjībiàn]
均方畸變 英文
mean square distortion
  • 均 : Ⅰ形容詞（均勻） equal; even Ⅱ副詞（都; 全） without exception; all
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 畸 : Ⅰ形容詞1 （偏） lopsided; unbalanced2 （不正常的; 不規則的）irregular; abnormalⅡ名詞[書面語] （零...
  1. At present, the typic harmful current detection methods are the fast fourier transform algorithm in frequency domain and methods based on the instantaneous reactive power theory, these methods all require some transform and quick, real - time calculating, so high precision analog multipliers or high speed dsp chip with fast a / d are needed, this results in complex circuit and high cost ， which have restricted the development of apf

    目前畸變電流檢測常用的方法有頻域法的fft和基於瞬時無功理論的畸變電流檢測法。這些方法均有一定的變換，需要快速、實時運算，因此必須使用高速的數字微處理器和高性能a / d轉換器，這必將大大提高系統成本，使得電路結構復雜，在一定程度上限制了有源濾波器的發展。
  2. A cyclic radial shearing interferometer was used to diagnose the wavefront distortion of a laser system and an lcslm ( liquid crysnd spatial ligh modulator ) was used to control it. some results have been summarized as follows : l. according to the theory of scalar quanity diffeaction and the model of the random gaussian phase screen of low frequency wavefront, the effect of the low frequency wavefront with different rms gradient on the focal spot of a laser beam was studied

    本論文在激光光束波前畸變檢測和控制上進行了新的探索，主要就空間相位調制環路徑向剪切干涉儀以及它對波前畸變的檢測和液晶空間光調制器及其對中頻段波前畸變的控制進行了研究，其研究的內容和取得的成果如下：一、根據標量衍射理論，結合低頻波前畸變的高斯隨機位相分佈模型，研究了不同均方根梯度低頻畸變波前對激光光束焦斑聚焦性的影響，並採用描述中頻段波前畸變的功率譜密度概念，模擬計算了它對激光焦斑旁瓣的貢獻。
  3. Based on analyzing the features o f low frequency phase noise of laser beam, rms of phase gradient was introduced to characterize it and the corresponding wavefront model was constructed by usin g random phase screen

    在分析強激光束低頻位相噪聲特點的基礎上，採用位相均方根梯度表徵激光束的低頻位相噪聲並結合隨機位相屏構建相應的畸變波前模型。
  4. Professor wenqian ' s theory of market types includes : the objective basis of distinguishing the market types is the comparison of market power between buyers and sellers ; the market types are determined by the market structures which are formed by values, prices, supply demand and market competition ; the typical sellers ' market, buyers ' market, balanced market, deformed sellers ' market and deformed buyers ' market have different characteristics in the structure factors and the run - mechanism ; market value and market volume are the main variables that cause transformation of these market types

    摘要聞潛教授的市場類型理論認為： （ 1 ）劃分市場類型的客觀依據是賣方與買方市場經濟力量的對比； （ 2 ）由市場價值、市場價格、供給和需求、市場競爭所構成的市場結構決定市場類型； （ 3 ）典型賣方市場、典型實方市場、均勢市場、畸型賣方市場、畸型買方市場在構成要素和運行機制上有不同的特徵； （ 4 ）市場價值和市場容量是引起市場類型轉化的主要變量。
  5. Abstract : the crystal structures obtained by static solidification and vibration solidification were compared. it was showed that, in the case of vibration solidification, the orientation growth of the columnar crystal was not obvious, the equiaxial crystal appeared more early. the grains of both types of crystals were quite fine, hardness in the full section was relatively high, and the hardness distribution was uniform. in the former case, the solute segregation in dendritical austenite more severe, and there were lumps of distortion inclusion

    文摘:對球鐵金屬型靜凝固與振動凝固的結晶組織對比表明：後者柱狀晶方向性生長較弱，等軸晶出現較早，且兩者的晶粒均較細，全斷面硬度較高且分佈均勻；前者枝晶奧氏體內溶質偏析大，有畸變夾雜團塊。
  6. It shows that when walk - off and diffraction effects could be ignored approximately estimation of the phase distribution of second - harmonic wave could be done. the far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. the phase distribution of both fundamental and harmonic wave is measured using hartmann - shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively

    這說明利用非線性光學頻率變換方法拓寬波前傳感器件的響應波段是很難實現的，但是，通常三波相互作用過程的研究均是建立在平面波和理想高斯光束之上，因此我們對于位相畸變倍頻過程的研究是非線性光學領域一個重要而有意義的新課題，它有助於人們更加深入理解非線性光學效應，為進一步合理利用之奠定了理論和實驗的基礎。
  7. Firstly, with uniaxial symmetrical rectangle cross section, the warping displacement function and tangential displacement function under anti - symmetrical load are supposed. then taking shear deformation into account and with potential principle, the governing differential equation for distortion angle subjected to uniformly distributed distortion load is established

    首先，以單軸對稱矩形截面薄壁桿件為研究對象，假設其在反對稱荷載作用下翹曲位移和切向位移的分佈函數，考慮剪切變形的影響，利用最小勢能原理建立單位均布畸變荷載作用下的畸變角微分方程。
  8. Tpih ( tube - bending process using local induction heating ), used as a new process method to prevent the producing of unequal distribution of the wall and ovality in the tube, has been widely applied in fields of petroleum chemical industry, light industry, pipe engineering, aeronautics and astronauts industries, etc.

    加熱彎管是防止管材彎曲截面形狀畸變與壁厚不均勻的一種新的工藝方法，廣泛的應用於石油化工、輕工、管道工程、航空航天等工業部門。
  9. Some mycotoxins have proven to be teratogenic, mutagenic and or carcinogenic in certain susceptible animal species and have been associated with various diseases in domestic animals, livestock and humans in many parts of the world

    現時已證實某些黴菌毒素在若干類易受感染的動物身上，會引致出現畸形突變及或致癌的情況，而且在世界許多地方，家畜禽畜及人類所患的多類疾病均與某些黴菌毒素有關。
  10. Later on, after elaborating the disadvantages of the old methods in detecting and recognizing moving objects, a series of corresponding approaches are proposed, such as grid scan, local tracking bug and dynamic window in object tracing to reduce the huge data needed to be processed, maximum and minimum for selecting a proper segmentation threshold and improved conversion from rgb model to hsv and so on to decrease the influence of inhomogeneous lighting and the color noise, a bilinear interpolation in each quadrant to eliminate the bad effect on the recognition precise because of the distortions of the camera. after that, much emphasis is given on application study in pattern recognition with a feed - forward neural network. both the basic bp algorithm and improved bp algorithm in the study process are described in detail, and the later is used to quicken convergence speed and improve validity of the network

    然後，分析和闡明了傳統的運動目標檢測方法的不足，並在此基礎上結合研究中的實際實驗環境，提出了一系列解決方法，包括針對降低龐大數據量而提出的網格掃描、局部「跟蟲」追蹤和動態窗口掃描等目標檢測方法，針對實驗環境中光照不均和顏色干擾提出基於人機交互的最大最小值閾值選取方法和引入改進的rgb模型到hsv模型的轉換方法，為消除圖像畸變對識別精度的惡劣影響而採用的通過控制點進行雙線性插值進行畸變校正的方法；緊接著，概述了神經網路的發展歷史和幾種常用神經網路模型的特點，重點研究了前饋型神經網路在模式識別中的應用問題，詳細闡述了基本的bp演算法和學習過程中bp演算法的改進，從而使網路收斂速度更快，解決問題更有效，並在此基礎上，設計了一個基於bp神經網路的運動目標識別系統，給出了實驗結果。
  11. Then the local weighted mean method is used to register the image distortions. this method can not only successively register the local geometric distortions but also fit for the infinite length image registration. images are registered and exported with sequential subsections

    然後以局部加權平均的表面擬和方法對失配圖像做幾何校正，該方法既有效地校正了遙感圖像中的局部幾何畸變，又適合於針對無限長圖像進行數據流式的分段配準輸出。
  12. According to this, we propose a new way to renew the traditional method of subjective image quality evaluation, different to only use mse ( mean square error ) and psnr ( peak signal - to - noise ratio ) to evaluate merely on radiation distortion, and complemented quantitative description on compressed image distortion o it is significant to choose the format of video transferation and measuring precision calculation of tracking and measuring systems based on images

    中國科學院長春光機與物理研究所博士學位論文據此提出了不同於傳統的僅用均方誤差（ mse ）和峰值信噪比（ psnr ）來評價圖像灰度輻射畸變的新思路，補充了對壓縮圖像幾何畸變的定量描述。這對于基於圖像的測量跟蹤系統中數字圖像傳輸方式的選擇，以及評價壓縮解壓演算法對測量精度的影響有重要意義。
  13. Image and vision computing, 1999, 17 : 489 - 499. 4 gottschalk p g, turney j l, mudge t n. efficient recognition of partially visible objects using a logarithmic complexity matching technique. the international journal of robotics research, 1999, 8 : 110 - 131

    它從以下幾方面解決以上問題：第一，高尺度的分析突出了圖像的高頻部分，因此能夠更準確地匹配圖像特徵第二，利用非均勻有理b樣條表示圖像畸變，這對大多數現實的圖像幾何畸變都適用。
  14. The results of experiment indicate the precision of the interior position elements and optical lens distortion coefficient of the digital camera reaches the design requirement and meets the close shot photogrammetry requisition for the general digital camera, so this camera can be used in the close shot photogrammetry

    實驗結果表明，數碼相機的內方位元素及物鏡畸變系數的精度均已達到設計的要求，滿足近景攝影測量對普通數碼相機的要求，故被標定的相機可用於近景攝影測量。
  15. On the basis of analyzing the result of the test, we have improved the structure of the damper and revised the systematic model. we have experiments on the damper to test its damping performance. comparing with the simulation force - displacement curves, we gave an explanation of why the factual force - displacement have aberrances, which gave warrants to the parameter design and structure ' s improvement. we found the state equation of the semi - active suspension on the semi - active adaptive control strategy and use computer simulations to compare the passive suspension structure and er semi - active suspension. computer simulations indicate that er semi - active suspension have greatly improved driving smoothing and control stability. at the same time semi - active suspension is of simple structure and low cost. so in the long run, the semi - active suspensions may have wider application

    在對試驗結構進行分析的基礎上，改進了減振器的結構，修正了系統的模型；對自適應減振器性能進行了大量的測試，通過與模擬結果比較，分析了造成示功曲線局部畸變的原因，為機構及其參數設計以及改進提供了依據；基於振動半主動自適應控制策略，建立了半主動懸架系統的狀態方程，並且進行了模擬，從而得出與被動懸架結構相比，採用電流變流體減振器的半主動懸架在汽車行駛平順性和操縱穩定性上均有較大的改善，性能大為提高。
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