柱面數 的英文怎麼說
中文拼音 [zhùmiànshǔ]
柱面數
英文
cylinders heads sectors-
As it can be expressed easily by argument equations, we use the conicoid as the criteria of points " classification. based on the point ' s normal and the adjacent field, corresponding to the conicoid equation such as plane, ball and cylinder, we search the points that fit the equation along the adjacent field. using this method, we realized the automatic classification of unorganized points
本文採用了可以比較方便地用參數方程表示的二次曲面作為數據點的分類標準，根據點的法向量以及其鄰域結點的各種屬性，對應于平面、球面、柱面等二次曲面，依據曲面方程的特點，從起始點開始沿鄰域深度優先遞歸尋找符合方程的數據點，實現了散亂數據點的自動分類。Modeling : this thesis develops a method different from traditional techniques that begins with the cylindrical projection of a generic model and its seamless global texture map using multiresolution technique, and then automatically fit the unwrapped cylindrical projected mesh to the texture map with an improved algorithm that based on 2d morphing to specify corresponding feature points ( or lines ). finally, we propose a formula of inverse cylindrical projection to recompose the deformed mesh, and after the texture mapping a photo - realistic individual facial model is created
採用多解析度技術構造紋理無縫拼接圖，然後把三維網格模型投影到圓柱面上並展開，根據二維圖象變形技術中特徵點匹配演算法的數學思想，將匹配公式進行改進后應用於模型網格點的適配，在作了一定假設后推導出逆向圓柱映射的計算公式，再將適配后的柱面網格映射回去，最後進行紋理映射生成真實感的特定人臉的三維模型。For the regular curves, we find two killing fields for the purpose of integrating the structural equations of the p - elastic curves and express the p - elastica by quadratures in a system of cylindrical coordinates. for the star - like affine curves, we solve the euler - lagrange equation by quadratures and reduced the higher order structure equation to a first order linear system by using killing field and the classification of linear lie algebra sl ( 2, r ), sl ( 3, r ) and sl ( 4, r ). we solve the centroaffine p - elastica completely by quadratures
對于正則曲線的情形，我們發現了兩個用於求解p -彈性曲線的結構方程的killing向量場並用積分將p -彈性曲線在一個柱面坐標系中表示出來，而對仿射星形曲線的情形，我們用積分方法解出了歐拉-拉格朗日方程，利用killing向量場及線性李代數s1 （ 2 ， r ） 、 s1 （ 3 ， r ）和s1 （ 4 ， r ）的分類將高階結構方程降為一階線性方程，因此我們用積分完全解出了中心仿射p -彈性曲線。As both the meshing point and ball ' s center are on the given cylinder, a general method for developing the cam ' s profile is studied. it is proved that the profile of positive and negative transmission is unique if the face gear, the difference between face tooth number and ball number and the diameter of ball are the same. the concrete expression of meshing cam on given spatial cycloid profile, and the characteristics of the profiles are discussed
論文的主要工作包括： 1 、根據嚙合點和鋼球中心軌跡均在同一圓柱面上的特點，研究了給定端齒齒廓條件下求解凸輪齒廓的一般方法；論證了在給定端齒、齒差數和鋼球直徑相同的條件下，正負齒差嚙合齒廓的唯一性；討論了端齒為球面擺線時，凸輪齒廓的具體表達式，並研究了該齒廓的性質。On the basis of summarizing current fractal dimension algorithms, the random midpoint replacement algorithm was employed to obtain interpolating point according to the fractal features of remote sensing image, so the current widely used triangular prism method was improved
摘要在總結現有分形維數計算方法的基礎上，根據遙感影像的分形特性，利用隨機中點替代法獲取插值點，從而對目前普遍使用的三稜柱面法進行了改進。The stability behavior of kiewitt ' s suspen - dome was analyzed on the initial state. by the geometrical nonlinear finite element method, the equilibrium path is traced using the cylindrical arc length technology and incremental newton - raphson method. the influence of kinds of parameters is studied
採用非線性有限元理論，結合牛頓荷載增量法和柱面弧長法的跟蹤技術，對kiewitt型弦支穹頂結構進行了考慮幾何非線性的全過程分析；為了掌握各個參數對靜力穩定性的影響程度，進行了參數分析。The simulation results with real aviation remote sensing image show that the improved method effectively keeps the image fractal features and can obtain more accurate fractal dimension
對模擬影像及實際航空遙感影像進行模擬，結果表明：改進后的三稜柱面法較好地保留了遙感影像的分形特性，計算的分形維數也更為準確。The function of stone artistic splice complete through to established basic design or source material warehouse with the help of others graph process software. besides author come up with a new program or machine method in accordance with stagger in the thicknes and vertical length at the stone sticking execution, i. e ensure the accuracy in measurement to approach subsection by space spiral line, the data used directly by numerical control machine. finally machined the stone become a spiral line columned surface arc slab
此外，針對旋轉樓梯扶手石材貼片施工時所出現的厚度和垂直方向易產生較大錯邊的問題，提出了一種新的建模方案和加工措施，即在保證測量精度的基礎上，分段以空間螺旋線逼近，經過計算機處理后的參數直接可供數控加工使用，最後把石材貼片加工成螺旋線型的柱面弧形扳。The conformal microstrip antenna with some unique character has been applied in many fields, especialy on speedy objects. in this paper, an efficient fdtd algorithm is introduced to analyse the microstrip antenna. firstly, the fdtd formula in descartes coordinate system and in cylindrical coordinate system are obtained from the time _ dependent maxwell equations using the yee algorithm in a calculating region where the dielectric parameters are independent of time and space. the choice of the space discretization units and the time discretization interval are discussed which are decided by the accuracy and stability respectively. the shape and setup of the excitation source are discussed too. the excitation source is chosen to be gaussian pulse in shape. secondly, the mur ' s first - order and second - order boundary condition are deduced in cylindrical coordinate system. the methods of transforming radiation fields from near zone to far zone in the frequency domain and in the time domain are presented when fdtd is applied to analyse the characteristics of far zone. finally, three kinds of microstrip antennas are analysed. they are a slot antenna that lies on a plane ground of a microstrip, a slot antenna that lies on a cylindrical ground of a microstrip and a microstrip line _ fed aperture coupled stacked rectangular patch antenna in cylindrical coordinate system
本文從麥克斯韋旋度方程出發，建立了笛卡兒坐標下無源空間中均勻無耗媒質的fdtd基本方程和圓柱坐標下無源空間中均勻無耗媒質的fdtd基本方程，詳細討論了fdtd法計算中時間步長和空間步長的選取原則以及激勵源的類型和設置；推導了mur一階和二階邊界條件在圓柱坐標下的差分格式；給出了在用fdtd法計算天線的遠場輻射特性時必需採用的頻域和時域近場遠場變換技術；最後用fdtd法計算了平面微帶縫隙天線、柱面共形微帶縫隙天線和柱面共形微帶層疊天線的輸入阻抗和遠區輻射場，並分析了天線的一些參數的變化對天線輸入阻抗的影響，得出了一些有用的結論。Research on the technology of superposition forming for irregular cylinder nc turning and milling
異型柱面數控車銑組合加工疊加成形技術研究The study shows that using a obtained from cylindrical surface of column can characterize the alloy steel samples, which have complicated phase structure
研究表明，通過比較圓柱面法測得的相對衰減系數，能夠對具有多種相結構的較大尺寸合金鋼試樣進行超聲表徵。The difference among the elasticity modulus of various microstructures is probably the main reason, which caused the experiment results above. under the same experiment conditions, such as sample shape, size, surface roughness, establishment of testing system, pressure on the probe, and thickness of coupling medium, the variety of relative attenuation coefficient ( or ) in different heat treatment samples is measured and compared by measuring the attenuation obtained from the cylindrical surface of column. the result is as following : for 40cr and 38crmoal, a mt < az mq < a s < a p + f ; for gcrlssimn, a mt < a annea < s < a p + f ; and a increased with the increasing of frequency
在保證試樣形狀、尺寸、表面光潔度、系統參數設置、施加在探頭上的壓力以及耦合層厚度等測試條件一致的情況下，利用棒材圓柱面測衰減系數法，分別測定並比較上述不同熱處理試樣相對衰減系數的變化情況，得到的實驗結果是：對於40cr及38crmoal鋼， _ （低溫回火） （淬火） _ （高溫回火） _ （正火） ；對于gcr15simn鋼， _ （低溫回火） _ （退火） _ （高溫回火） _ （正火） ；且隨著頻率的提高，衰減系數均呈現增加的趨勢。By comparing with stochastic structural analysis, relations between the two methods have been found. the response surface method is used to obtain the second order estimates of the calculated results bound. by means of viscoelastic stochastic finite element method, the instantaneous reliability, the first passage reliability and fuzzy reliability of srm grain are investigated
採用凸集合模型表示藥柱參數的不確定性，在粘彈性有限元攝動分析基礎上進行了結構的響應區間計算，討論了概率方法和集合理論模型得到的響應區間之間的關系，利用響應曲面法進行了區間的二次估計。On this screen you can specify which partition the boot loader is installed to most will want the default mbr option ; those who don t will know why and the consequences therein, and force lba32 you shouldn t need to use this option, because newer hard drives and boot loaders have overcome the 1024 cylinder limitation
在這一屏幕上您可以指定將引導裝入程序安裝在哪個分區上（大多數人都用預設的mbr選項；而不用該選項的人須知道為什麼不用它，以及不使用它會帶來什麼後果） ，並強制使用lba32 （您應該不必使用該選項，因為較新的硬盤驅動器和引導裝入程序已經克服了1024柱面的限制） 。Commands to set data patterns, perform ecc tests, manipulate the error log, dump the sequencer ram
用來為測試配置柱面，磁頭，給出選項來隨機柱面/磁頭和隨機數據模式的指令。At first this paper pointed out a technique of solution about cylinder ' s parameter equation, and also introduced a technique of solution on the parameter equation of sapce curve ' s projection on the flat surface, which made application more convenient
摘要首先給出了柱面參數方程的求法，從而也給出了空間曲線在平面上的投影曲線參數方程的求法，使應用更加方便。It is shown, through the analysis of their surface power and astigmatism, that the shape of the meridian line has significant influence upon the distributions of surface power and astigmatism. their keystone distortion is small. in this way, pal meeting different circumstances can be designed
最後，舉例設計了光焦度增量為2 . 50m ~ （ - 1 ）的幾種漸變鏡片，通過對設計結果分析研究，指出可得到梯形畸變較小的pal鏡片，子午線光焦度漸增多項式參數的選取會影響鏡片球面度和柱面度的大小和分佈，由此，可設計滿足不同使用要求的漸變鏡片。If not, determine your drive geometry cylinders, heads, and sectors, and use the parameter
如果不行，請確定驅動器幾何參數柱面磁頭還有扇區。然後使用參數The solving steps are as follows : the field is divided into three regions by the cylindrical surface of the finite - length cylinder and the location of the delta - coils. because " the surface current source is placed at the interface, the non - homogenous restricted equation on the magnetic vector potential is transformed into the homogenous helmholtz equation. by using the method of separation of variables to solve equation and according to the interface conditions and the condition at infinity to determine the unknown constants, the expressions for the magnetic vector potential of the three regions are solved out
在求解過程中，假定放置式圓柱線圈是由無窮多個對稱圓環線圈密饒而成，首先求解含有有限長磁芯的通電對稱圓環線圈的電磁場：以有限長圓柱磁芯的側面和圓環線圈所在圓柱面為分界面將場域劃分為三個小區域，由於場源放置在內邊界面上，使得關于矢量磁位的非齊次約束方程轉化成齊次亥姆霍茲方程，利用分離變量法求解，根據分界面鄭州大學碩十研究生畢業論文摘要條件以及無限遠條件確定待定常數，從而得到各場區矢量磁位的表達式。A class of exact solutions of the dirac equation are obtained for an electron in the electromagnetic field of a wave guide formed by two pairs of hyperbolic cylinders
摘要研究了位於由兩對雙曲柱面構成的波導管電磁場里的單電子的性質，得到了單電子在場中狄拉克方程的新一類精確解；計算了極化算符的本徵函數。分享友人