polar coordinate system 中文意思是什麼

polar coordinate system 解釋
極坐標系統
  • polar : adj 1 （南、北）極的，地極的；近地極的。2 【物、化】（有）極的；磁極的；有磁性的。3 【幾】極線的...
  • coordinate : adj 1 同等的，同位的；協調的，配合的；【語法】對等的。2 【數學】坐標的。3 （圖書、資料編目）交叉...
  • system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
  1. The paper abstracts out the palmprint mainline characteristic owing to palmprint image gradation by the gray value characteristic property method, defining the online palmprint characteristic space with the form of the polar coordinate and compressing the dimension, at last we use the neural network to accomplish the design of identification authentication system with the on - line palmprint as the mating algorithm. based on this, a fast and reliable system of identification authentication can be built

    採用基於掌紋圖像灰度特性的方法提取出掌紋的主線特徵，以極坐標的形式定義在線掌紋的特徵空間並降維處理，最後用神經網路作為匹配演算法完成在線掌紋身份驗證系統的設計，以此為基礎建立了快速、可靠的新型身份認證系統。
  2. B ) to give full play to the government ' s role of macro - management and coordinating, reforming the examine and approve system, improving the insurance systems for investments abroad, fully utilizing the financial means to support the private - owned enterprises " investment abroad. on the other hand, the socialization service system for the small and middle - sized private - owned enterprises should be made perfectly and innovation ability of private - owned enterprises should be cultivated as soon as possible, c ) to build up the foreign exchange control system, which is adapted to the need of international market, d ) to perfect the financial service system and support the private - owned enterprises " investments abroad, that is to raise the financial institutions " supports for the small and middle - sized private enterprises ; to develop the small and middle - sized financial institutions actively which can coordinate well with th e private - owned enterprises ; to set up multi - polar stock rights investment structure ; to perfect the risk inves

    本文第四部分也是文章的中心部分，主要對民營企業開展對外投資提出了若干建議： 1 、加快出臺與對外投資相關的法律法規； 2 、充分發揮政府的宏觀管理和協調作用，改革審批制度、健全對外投資保險制度、充分利用財政及金融手段支持民營企業對外投資、完善中小民營企業的社會化服務體系以及加快培育民營企業的創新能力； 3 、建立適應國際市場需要的外匯管理制度； 4 、完善金融服務體系，支持民營企業對外投資，建立多極化股權投資體制，健全風內容提要險投資體系以及大力發展中小民營企業信用擔保體系。
  3. The properties of the key optical and electrical devices and the controlling mode in the system are put forwards. using the polar coordinate lines with different directions and the circulars with the same axis can be written together. by using he - cd laser ( 442nm ) as writing light source, the system can directly write line with width 05 # m on a sample

    本文的主要目的是建立了一種極坐標和直角坐標相結合的激光直寫系統的原理樣機，探討系統的各部分器件的基本性能要求，為今後研製高精度激光直寫系統做好工作基礎，分析了激光直寫系統中關鍵器件的性能要求，基本控制方式，實現了極坐標方式下，任意旋轉角度直線圖形與共心圓環的光刻。
  4. Fitts " law was extended to two - dimensional polar coordinate system, and based on this, a method on human movement quality evaluation was proposed. indices of gait symmetry, indices of difficulty and indices of performance for human upper limbs were defined and combined with other indices to form a set of systematic indices of movement quality evaluation

    將fitts定律推廣到二維極坐標下，並以此為基礎建立了矢狀面內的人體運動質量評定方法，定義了上肢運動的難度指標、執行度指標和下肢運動的對稱性指標，提出了一套能反映運動質量各方面情況且具有普遍意義的運動質量評價指標。
  5. A discretization equation is derived by using a finite volume method in three - dimensional cylindrical polar coordinate system. algebraic equations are solved by iteration with a line - by - line method that is a combination of tdma in axial and radial directions, ctdma in tangential direction and adi method in three directions. the pressure and velocity coupling are solved with the simple algorithm

    在三維圓柱坐標下，利用有限體積法推導離散方程；在軸向與徑向用三對角矩陣法（ tdma ） ，在周向採用循環三對角矩陣法（ ctdma ） ，採用交替方向亞鬆弛疊代法（ adi ）求解方程；推導同位網格下的壓力修正方程，用simple演算法處理速度與壓力的耦合；為加速收斂，採用適當的鬆弛因子。
  6. In our approach, the approximated center of object is selected from the references images and a polar - coordinate system is set up for the object

    該演算法充分利用了極坐標表示的簡潔，將三維求交重建運算轉化到球面上，獲得了較高的建模效率。
  7. This is a single step process and comparatively cheaper and faster than lithography. the laser direct writing system with polar coordinate and cartesian coordinate is described in this paper

    激光直寫系統要求的器件的精度非常高，我們目前的工作目標是首先實現激光直寫系統的基本功能，在此基礎上，再進行高性能系統的研製。
  8. Governing equations of a modified k - model is derived in a three - dimensional cylindrical polar coordinate system, and an available equation is produced

    首先給出單相螺旋流流場在三維圓柱坐標下的修正-湍流模型的控制方程，得出控制方程組的通用形式。
  9. This paper proposes a subblock - based image retrieval method under the polar coordinate system for retrieving trademark image. after preprocessing the trademark image, the regular binary - image is obtained

    針對現有的四叉樹分塊方法的不足，提出了一種極坐標下的分塊檢索方法。
  10. This paper does research mainly on content based trademark image retrieval, especially on subblock - based image retrieval, presenting a new subblock - based image retrieval method under the polar coordinate system for retrieving trademark image, and designs trademark tmage retrieval system based on integrated features

    本文對基於內容的商標圖像檢索，尤其是對分塊檢索方法進行了研究，提出了一種新的基於極坐標下分塊的商標圖像分塊檢索方法，並設計開發了一個基於綜合特徵檢索的商標圖像檢索系統。
  11. Polar coordinate system

    極坐標系統
  12. The study on the methods of obtaining the solution of the derivation of the equilibrium equations under polar coordinate system

    在極坐標系下求平衡微分方程解的方法研究
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