polar line 中文意思是什麼
polar line
解釋
極線-
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。 -
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。 -
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。 -
This paper provides the general equations of the theoretical contour line and the actual contour line of roller translation follower and roller oscillating follower disc cam in the polar coordinates system and the rectangular coordinates system, respectively. the equations are not only fit for the different layouts of the relative position of follower and cam, but also fit for the different types of cam contour
分別給出了滾子直動從動件和滾子擺動從動件盤形凸輪的理論廓線及實際廓線在極坐標系與直角坐標系下的通用方程，它們對于從動件與凸輪相對位置的不同布局方式及凸輪輪廓的不同類型均適用 -
Specification for tractive armature direct current neutral - polar line relays for railway signalling
鐵路信號用牽引電樞直流中性極化線路繼電器規范
分享友人