獨立未知數 的英文怎麼說

中文拼音 [dúlìwèizhīshǔ]
獨立未知數 英文
independent unknown
  • 獨 : Ⅰ形容詞（一個） single; only; sole Ⅱ副詞1 （獨自） alone; by oneself; in solitude 2 （唯獨） only...
  • 立 : 動1 （站） stand; remain in an erect position 2 （使豎立; 使物件的上端向上） erect; stand; set up...
  • 未 : Ⅰ副詞1 （沒） did not; have not 2 （不） not Ⅱ名詞1 （地支的第八位） the eighth of the twelve ear...
  • 知 : Ⅰ動詞1 （知道） know; realize; be aware of 2 （使知道） inform; notify; tell 3 （舊指主管） admin...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 獨立 : 1. （單獨站立） stand alone 2. （自主自立; 不受人支配） independence 3. （不依靠他人） independent; on one's own
  • 未知數 : 1. [數學] unknown number2. （不確定） unknown; uncertain
  • 未知 : unknown
  1. Fluid network was divided into a lot of independent loops. through changing states of valves, i got pipe flux and pipe pressure drop. based on pressure balance equation, i built the differential equation system, solved the differential equation system, and acquired resistance coefficients of pipes and component

    並將流體網路圖分解為一個個獨立迴路，通過改變閥門的狀態，來獲取迴路各管段流量和壓力損失，根據迴路壓力平衡方程，建立方程組，對方程組進行了求解，解出了各未知管段、流體器件的阻力系數。
  2. In this paper, chroma dc coefficients are selected as the carrier data because chroma dc coefficients are robust. also, alterable steps are used to select one part of the coefficients, so the watermark is imperceptible ; before watermark embedding, the watermark is divided into many parts, every part is individually embedded into one gop of the video, even if a gop is destroyed, the watermark can be extracted correctly, this methods promotes the robustness of the watermark ; in addition, in order to promote the security of the watermark, the user ' s id and password are used to generate chaos sequence by the chaos system which is created in this paper, later, watermark is mixed by the chaos sequence. also, the embedding position of the watermark bit is modified by one chaos sequence, so, unauthorized person can not extract or remove the watermark, since the embedding position is unknown

    本文認為，色度dc系數是魯棒性非常好的參數，因而選擇色度dc系數作為水印信息載體，同時，採用可變的步長選擇部分系數，保證了水印的隱形性；在嵌入水印時，本文採用水印信息「網格劃分」 、各子塊獨立嵌入視頻的方案，由於水印信息子塊是相對獨立的嵌入視頻中的每一相對獨立的圖組當中，即使某一圖組收到一定破壞，也能夠恢復水印信息，使水印的健壯性得到提高；此外，為了提高水印信息的安全性，在嵌入水印信息時，根據用戶輸入的id號和密碼，利用本文構造的混沌系統產生的混沌序列對水印信息進行變換，同時，對每一水印信息比特的嵌入位置也採用了偽隨機序列進行調整，這樣，未授權用戶不能提取水印信息，也難以擦除其中的水印信息，因為嵌入的位置是未知的。
  3. 8 sturm p. a case against kruppa s equations for camera self - calibration. in proc. ieee international conference on image processing, chicago, illinois, october, 1998, pp. 172 - 175

    工程領域中的許多問題歸根結底轉化為方程組的求解問題，如果未知參數的個數多於獨立方程的個數，在理論上，這些參數無法通過這個方程組求解得到
  4. Independent component analysis ( ica ) is a new multi - dimensional signal processing technology developed from blind source separation of late years. some scholars have brought forward a new polarimetric speckle reduction method by using independent component analysis which based on the multi - polarimetric trait of polarimetric sar and the independence between speckle and texture of sar imagery. while the algorithm thinks that there is only one real scene in polarimetric sar source images, so they get only one recovering image in the procedure of image separation and lose polarimetric property

    獨立分量分析是近年來由盲源分離技術發展來的一種新的多維數字信號處理技術，通過計算數據的高階統計信息，可以僅從觀測信號中估計出互不相關且盡可能相互統計獨立的被未知因素混合的原始信號的估計信號，從而幫助實現信號的增強和分析。
  5. Let be a sequence of independent and identically distributed random variables ， with mean and variance. while the distribution function is unknown ， and is large ， then is a normal approximation distribution

    3設相互獨立的隨機變量服從同一分佈，已知均值為，方差為.單分佈函數未知，當充分大時，近似服從正態分佈
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