直角合 的英文怎麼說
中文拼音 [zhíjiǎogě]
直角合
英文
heading joint-
This paper discussed the coordinate transformation method of wgs84 coordinate system to 1954 - beijing gauss grid coordinate. introduced transformation model of wgs84 to beijing 54 and computing method of transformation parameter. according to different model and computing method, computed and compared with the result combine real data
本文詳細討論了wgs84大地坐標轉換到北京54坐標系下的高斯平面坐標的方法，重點介紹了wgs84和北京54的空間直角坐標的轉換模型及轉換參數的計算方法，並根據不同的模型和計算方法結合實際數據進行計算和結果的比較，認為採用基線向量求解的四參數模型具有較高的轉換精度，分區變換和提高控制點精度也能提高轉換的精度。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。Woven fabrics usually present orthogonal interlaced yarns and distribution of the fibers in the yarns and of the yarns in the composite may be considered regular. this allows us to apply the homogenization theory for periodic media both the stiffness and the strength of woven fabric composite material
編織復合材料的編織方案通常表現為兩股纖維束呈直角相互編織，纖維在纖維束中的分佈可以認為是規則的，纖維束在復合材料中的分佈也可以認為是規則的。Test combinations of sides on right triangles
對直角三角形邊的組合進行測試Through the simulation of the forming process, we can get the deformations, stress, strain, plastic flowing in sheets and the interface state under impact load and rolling load, the deformation of the sawtooth form and comparing to the initial state, the results above are expressed in computer animated way. and the effect of geometrical ( mainly different form, including 90 degree, isoceles triangle ， 75 degree, and 1. 5 high and wide ), material and technical parameters on the bond strength are analyzed, also including the comparison of different sawtooth form. the optimum parameters are got
對雙金屬復合板成型過程進行模擬，從而得到在沖擊載荷和軋輥壓力作用下基板和覆板的應力、應變分佈和塑性流動變形規律，復合后的齒形的變形情況與初始齒形形成對比，以動畫的方式模擬成型過程，並分析了不同幾何參數（主要是不同的齒型，其中包括直角齒型、等腰齒型、 75度齒型、 1 . 5高寬齒型） 、材料參數、工藝參數對復合強度的影響，以及不同齒型的變形對比以及齒型對復合情況的影響，提出最優齒型、最優工藝參數，有效地指導了實驗。Reducer, a type, 90 degree elbow, titianium alloy, flared tube
鈦合金擴口式a型變徑直角管接頭Reducer, screwed - onto, 90 degree elbow, titianium alloy, flared tube
鈦合金擴口式擰入式變徑直角管接頭Elbow, screwed - onto, 90 degree titianium alloy, flared tube
鈦合金擴口式擰入式直角管接頭Flared type tube fittings - swivel run tee - body
擴口式組合直角三通管接頭體( 3 ) base on the mingling method of statistics and structure, paper is studied in automatic recognization for point symbols and building symbols - accoding to traits of point symbols, it adopts combination method to recognize
（ 3 ） 、用統計-結構結合法，重點在掃描地形圖中對點狀符號和建築物的自動識別的研究。根據點狀符號特徵進行組合識別法識別；根據建築物結構中有直角的特點，進行建築物的先統計識別，后結構法識別。A computational method is developed with couples the governing equations of the unsteady flow field and the rigid - body dynamics in six degrees - o f - freedom. 6. facing the complex multi - element and high - lift configuration, a series of methods including multi - zone algorithm and face - to - face technique is developed to lower down the great difficulties of grid generation and finish flow calculation of high - lift system with the dual - time method
採用基於自適應直角切割網格的分區面搭接方法，結合隱式雙時間推進演算法，實現了三維復雜增升裝置繞流的euler方程數值計算，發展了對存在不連續面的高陞力系統外形進行流場計算的一種方便、實用、高效的三維增升裝置繞流計算方法。In modern aircraft design, there is an urgent requirement for accurate, efficient and easy - to - use numerical analysis tools. for this purpose, this thesis introduces recent progress in the generation and application of cartesian grid with tree data structure and adaptive refinement. coupled with hybrid grid techniques, euler and navier - stokes equations are solved
本文針對現代飛行器設計中對實用、高效、準確的氣動力分析工具的迫切需求，基於叉樹數據結構，發展了一種自適應直角切割網格方法，採用混合網格技術，實現了對流場euler和navier - stokes方程的計算求解，進一步完成了復雜增升裝置繞流和外掛物分離投放非定常流場的數值模擬。Based on tree data structure, the cartesian grids about 2 - d and 3 - d configurations are generated using the surface - cutting procedure. in the course of grid generation, a two - step ray - casting algorithm to excluded cells inside the body and a cell - merging technique to avoid numerical instability are fully developed. after creating these surrounding grids, the cell - cutting algorithm is designed to perform geometry - based refinement of grids, and greatly improve the applicability and quality of grid generation
採用物面切割，基於叉樹數據結構，發展了一種普遍適用於二維和三維外形的直角切割網格生成方法；構造兩步射線求交演算法，刪除外形內的固體網格，以及小網格合併演算法，確保網格質量和流場計算的穩定性；運用對任意網格的切割細分演算法，實現了針對幾何外形的自適應網格加密，使得網格生成更具普適性和靈活性。3. a hybrid grid method is described which combines structured grids with unstructured triangular and cartesian tree grids to provide great flexibility in discretizing a domain. according to this idea, computational grid of n - s equations solution is generated, which greatly extend the ability of the cartesian grid
基於結構非結構混合網格方法，利用三角形非結構網格、結構化網格和直角切割網格的各自特點和優勢，生成了適用於navier - stokes方程求解的計算網格，拓展了直角切割網格在復雜流場數值模擬中的適用范圍。Lastly, aiming at the poor results which all current algorithms do for directional textures, and cannot synthesis texture directly, aiming at the particularity of this kind of textures, we bring forward the conceptions of non frontal parallel textures and frontal parallel textures. by analyzing texture ' s direction through fourier spectrum, we introduce the conception of main direction, and solve the approximation value of texture ' s main direction by discrete approximated approach. by this way, we can synthesis indirectly simple structural non frontal parallel textures
最後針對現有演算法對帶有方向的紋理合成效果差，無法直接合成紋理圖像的難點，本論文首先提出了非正平行紋理與正平行紋理的概念，分析了它們之間的內在聯系，引入了兩個角度參數來描述紋理的朝向，採用傅立葉頻譜法分析紋理的方向特性，並提出了紋理主方向的概念，本論文引入離散逼近的方法來求解出紋理主方向的近似值，這樣我們就能用一種間接的方法合成簡單的結構性非正平行紋理。Dental handpieces. part 2 : straight and geared angle handpieces
牙科機頭.第2部分:直角和嚙合角機頭In this thesis, a novel structure of silicon - based passive ring waveguide resonation cavity is firstly introduced and designed. the design is combined with the mems technology, which gets rid of the curved waveguides in the previous waveguide ring resonation cavity and facilitates optical integration. the structure has characteristic of " the smaller the resonation cavity, the smaller the loss ", which has a promising future of miniaturization and fits the field of resonation rmog
本文首次提出並設計了一種新結構的硅基無源環形波導式諧振腔，該設計與微機械技術相結合利用集成反射鏡實現光波導直角轉彎，擺脫了以前的波導式環形諧振腔中必需包含的彎曲波導，易於光學集成；同時該結構具有諧振腔越小損耗就越小的特點，有很好的微型化前景，很適合應用於諧振式微光陀螺（ rmog ）領域。Then the equations of elastic problem are imported into the hamilton system in the plane right - angle coordinate system and a new symplectic numerical method, the symplectic difference method of elasticity in hamilton system, is put up based on the mixed equation of elastic problem. the arithmetic of the method is programmed and used in the solution of three problems of elasticity, which is sheet problem, simply girder problem and deep girder p roblem that is pressed equally in the right - angle coordinate system
然後在平面直角坐標系下將彈性力學問題引入到hamilton體系中來，針對彈性力學混合方程建立了一種新的辛型數值計算方法? ?基於hamilton體系的彈性力學辛差分方法；並且編程實現了該方法的演算法結構，計算了三個具體的算例：受均布載荷的薄板問題、簡直梁問題和深梁問題。Thus, the wave equations have to be written in curvilinear coordinates before applying the numerical scheme. because the grid is cartesian in the curvilinear domain, standard pseudospectral technique can be applied. at last the synthetic record of physical configuration can be evaluated
這一映射技術將直角坐標系下的曲界面變換成曲坐標系下的規則界面，在曲坐標系下用偽譜法模擬波場，最後利用插值得到實際波場的合成記錄。The last, taking into account of the nonlinear transformation from sphere frame to cartesian frame, maneuvering target tracking is simulated by using current statistical model and converted measurement kalman filter ( cmkf ) without linearization bias in the statistical condition. the paper presents the converted measurement covariance that determines when to use the current measurements vs. the predicted state, and the simulation results are satisfied
最後，針對球坐標系與直角坐標系之間的變換是非線性變換的特點，哈爾濱工程大學博士學位論文運用統計條件下不存在線性化誤差的轉換測量卡爾曼濾波演算法，結合「當前」機動模型對機動目標進行了模擬研究。分享友人