環形曲面 的英文怎麼說

中文拼音 [huánxíngqūmiàn]
環形曲面 英文
annular surface
  • 環 : Ⅰ名詞1 （環子） ring; hoop 2 （環節） link 3 （姓氏） a surname Ⅱ動詞（圍繞） surround; encircle;...
  • 曲 : 曲名詞1 （一種韻文形式） qu a type of verse for singing which emerged in the southern song and ji...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 環形 : annular; ringlike; ring form; bight; annularity環形癌 annular carcinoma; 環形電路 [訊] loop circu...
  1. The thesis developed the optimization design software of geometric parameter for the worm gear including strength check module, the drawing contact lines module, the change lines of tooth thickness of worm, and the parametric modelling software for the reducer which includes parametric modelling of parts and assembly. the cad prototype system is very convenient because of its accessible interfere, simple operation and written in chinese. by input design parameters ， the cad system can make optimization design and strength check for the worm gear ， draw contact lines of tooth flank of worm - gear and change line of tooth thickness of worm ， judge if the tooth flanks of worm undercut and if the sideward tooth of worm - gear hob come to a point ， make project design and structure design for the reducer and draw its 2d parts and assembly

    研究和開發了平面二次包絡環面蝸桿傳動的參數優化設計和校核軟體系統：包括幾何參數設計計算模塊，強度校核模塊，繪制齒面接觸線模塊，蝸桿齒厚變化曲線模塊和蝸桿根切判別模塊；開發了平面二次包絡環面蝸桿減速器外形與結構尺寸數據庫以及傳動效率數據庫，建立了平面二次包絡環面蝸桿傳動公差及極限偏差數據庫；開發了平面二次包絡環面蝸桿減速器參數化建模軟體：包括零部件的參數化建模模塊和裝配圖的參數化建模模塊，其中零部件的參數化建模包括蝸桿軸系的參數化建模、蝸輪軸系的參數化建模、箱體的參數化建模、端蓋的參數化建模、軸承的參數化建模和其它零部件的參數化建模軟體模塊。
  2. Linear induction motor is an important kind of machines which have some merits such as simple structure, low cost, durability, convenience for maintenance etc. the subject of this thesis is to study a big circular ring linear induction motor, and the major works in this thesis are summarized as follows : ( 1 ) considering the effects of the finite length of primary core, one - dimension analytical solution for the air gap field is cited in this paper. based on it, the single layer winding magnetic field is studied. considering whole - pitched and short - pitched winding configuration with odd poles and half - fulled slots in both ends, the double - layer winding magnetic field is analyzed, respectively

    本文對大圓環直線感應電機進行了深入細致研究，內容包括： （ 1 ）本文採用有限長行波面電流作用於有限長鐵芯上的模型，引用了氣隙磁場一維解，研究了單層繞組磁場，奇數極半填槽雙層繞組在採用整距和短距時磁場的分析、比較，簡單介紹了二維解； （ 2 ）用有限元軟體ansoft對大圓環直線感應電機空載氣隙磁場進行了靜態分析，並分析了結果； （ 3 ）用軟體進行了額定電壓下的瞬態分析，得到了轉矩，位移，轉速隨時間變化曲線圖，利用單極性霍爾元件測定轉速並與軟體計算結果進行了比較，採用等效電路法計算了堵轉時的最大電磁力並做實驗進行了驗證，由實驗測得了三相電流波形，並與計算結果進行了比較，對其不對稱性進行了定性分析。
  3. Based on the review, the fluid flow and heat transfer in the curved circular and rectangular pipes have been researched by employing perturbation method and numerical simulation with a physical model under the rotational orthogonal curvilinear coordinate in a rotating curvilinear pipe with multi - parameters. we firstly analyzed the fully developed fluid flow and heat transfer, mixed convection heat transfer, the development of flow and heat transfer in the inlet in different cross section ( circular, elliptical, annular and rectangular crossection ). the variations of the secondary flow, axial velocity, distribution of temperature, the friction force on the wall, the ratio of friction factor as well as the nusselt number with different dimensionless parameters had been examined in detailed

    本文在總結和分析了一個世紀以來有關曲線管道流動和換熱特性的研究成果的基礎上，以旋轉正交曲線坐標系統下的多參數旋轉螺旋管道中的對流傳熱為物理模型，通過攝動方法和有限體積法，首次對各種截面（圓截面、橢圓截面、環形截面、矩形截面）旋轉曲線管道內充分發展流動的流動結構和傳熱特性（包括耦合對流傳熱特性）以及旋轉曲線管道開口段發展流動的流動結構和換熱特性進行了系統的數值模擬和理論分析，詳細討論了各種無量綱參數對管道內軸向速度分佈、二次流結構、溫度分佈、壁面摩擦力、摩擦系數比以及管道nusselt數的影響，獲得了若干創新性成果。
  4. In order to obtain the image of absolute point, we design two kinds of planar model. and they are equilateral - polygon planar model and planar model that containing more than two circles

    為了從圖像中獲得圓環點的圖像，我們設計出二類不同的平面模板：正多邊形平面模板和包含二條以上圓曲線的平面模板。
  5. They can be found in circular cast houses of blast furnace, in oil - sealed dry gasholders and in workshops with curved cranes. cross sections of these curved members are of various types, such as il - shaped, i - shaped, channel, box and h section without any symmetrical axis

    曲線梁在工業和民用建築中也常有應用，在高爐環形出鐵場、乾式煤氣櫃內部結構以及某些有工藝要求的廠房內，常需採用不同截面形式的環形曲梁。
  6. Surface modeling is an important subject in computer aided geometric design and computer graphics. it researches on denoting, designing, displaying and analyzing of surface in the environment of computer image system

    曲面造型（ surfacemodeling ）是計算機輔助幾何設計（ computeraidedgeometricdesign ， cagd ）和計算機圖形學（ computergraphics ）的一項重要內容，主要研究在計算機圖象系統的環境下對曲面的表示、設計、顯示和分析。
  7. In the part of 3d modeling, some theories and technologies was discussed. then, how to build 3d terrain was analysis. this dissertation presented two new methods of terrain building : lofting based on contour and random terrain building based on fractional brown motion

    三維地形是虛擬環境的基本要素，本文總結了各種地形建模方法，提出了兩種地形建模方法：根據等高線地圖生成地形的「沿截面法線放樣法」和生成隨機地形的分形曲面法。
  8. Based on summary and analysis of cad technology, computer graphics, 3d modeling method, development environment and database technology, this dissertation has made researches and practice with the emphasis on the following several aspects : 1 ) the development of 3d modeling technology of cad experiences wire frame modeling, curved surface modeling, solid modeling, parameterized modeling and variable modeling. the technologies of different period are usually coexistent and not exclusive in concrete software products

    鄭州大學碩士學位論文第11頁在對cad技術、計算機圖形學、三維造型方法、開發環境、數據庫技術等進行綜述分析的基礎上，本文著重對以下幾方面內容作了研究及實踐： l ） cad三維造型技術經歷了線框造型、曲面造型、實體造型、參數化造型及變量化造型技術等五個階段，不同階段的技術在具體軟體產品中往往是並存的，而非排它的。
  9. Creatively, this paper advance involute as the tooth form that has been used widely in the engineering, and we also bring forward a design idea that tooth can be distributed continuously on spherical surface. based on those ideas, we invent the spherical gear of ring involute tooth. it is proved that this mechanism overcome the two big objections of traditional gear by solid model, and so a great breakthrough is achieved in the gear drive field. 2

    本文創造性地提出了採用工程上廣泛應用的漸開線作為齒廓曲線，並將輪齒沿緯度方向在球面上呈連續分佈的設計思想，在此基礎上發明了漸開線環形齒球齒輪機構，實物模型證明，該機構從根本上克服了傳統離散齒球齒輪存在的傳動原理誤差和加工困難兩大障礙，在齒輪傳動領域取得了重大突破。
  10. It can be concluded that the performance differences between the plate membrane and the hollow fiber membrane can be attribute to difference of the stresses in the membranes when they were under pressure and the difference of the strain caused in the membrane, besides the possible reason that the surface curvature difference between a plate substrate and a hollow fiber one may cause structure difference in the dense functional layer when coating. the stresses in a hollow fiber composite membrane under an outside pressure are quite different from that in a plate one in that they exert on the hollow fiber in both the radial and circular directions, and the compress strain of the hollow fiber is thus much more complex, which may cause the top layer crinkle and a decreased salt rejection

    分析認為造成平板復合膜（ ）和中空纖維復合膜（ ）性能差異的主要原因，除了平板基膜與中空纖維基膜因表面曲率不同可能引起在塗覆時形成的緻密功能層結構上的差異之外，由於中空纖維膜受外壓時，膜內部承受的應力形式與平板膜不同，會同時在徑向（膜厚度方向）和環向（膜面內方向）兩個方向產生壓應力，因此，所發生的形變也較為復雜，可能造成表面復合層的起皺或脫落，引起脫鹽率下降。
  11. Viscosimetry ; capillary viscometers with circular and rectangular cross section for determination of flow curves ; principles, concepts, definitions

    粘度測定法.測定流速曲線用環形和矩形橫截面的毛細管
  12. Viscometry ; capillary viscometers with circular and rectangular cross section for determination of flow curves ; systematic deviations, sources and corrections

    粘度測定法.測定流速曲線用環形和矩形橫截面的毛細管
  13. It presents algorithms to extract the similarity of intersect curve in different offset distance and use ttp to label the topology of surface intersect. the algorithms succeed in combination of tracing method and topology information, and present an optimized offset ssi algorithm. the optimized algorithm pre - processes surfaces to achieve ttp, and decides calculation strategy of starting points by analyzing the properties of ttp on the surface

    本文通過對等距曲面交線結構進行了大量的分析，從交線的形成和演化過程，揭示了等距曲面的交線拓撲結構和曲面上特徵點之間存在著本質的聯系，提取等距曲面不同offset距離交線環的相關性，並使用特徵點來標識交線環的拓撲信息，成功地將拓撲信息和跟蹤法相結合，設計了一種等距曲面求交優化演算法。
  14. Secondly, the problem of the curve - surface mutual transforming and smooth - finishing have been analyzed farther. for the surface intersecting problem : owing to the introduction of the boundary points, as long as the intersecting points on a certain line, the full intersecting line can be gained. the intersecting line either intersects at the boundary of the triangle surface or forms the loop ; during the course of tracking, the selecting of the pace is restricted by the curvature, the number of the gained intersecting points are not in proportion as the chord - length ; the intersecting points not only record the coordinate and store the parameter

    對兩曲面求交問題，當曲面細化足夠小時，曲面求交可近似看成曲面與平面相交問題，引進了邊界點的概念，因此只要知道交線上的任意點，就可以將跨越許多曲面片的整條交線計算出來，所求出的交線或者跨越曲面的邊界，或者形成交線環；從初始點出發跟蹤求解整條交線的過程中，步長的選擇採用了通過曲面片曲率來約束的方法，用該方法求出的交點在不同曲面片上的分佈數目不與弦長成正比；該求交方法包含了各曲面片的邊界線與交線的交點的求解，可獲得邊界交點的坐標值及其參數值。
  15. To analyze financing structure of listed companies in china, first, based on the relative analysis of financing structure of listed companies in western developed countries, we review current situation in china, and describe and test the financing behavior and the financing structure of china ' s listed companies. second, i explains the factors of equity financing preference in the following three aspect : cost - financing cost, corporate interior - governance structure, and the external surroundings - financing markets. finally, in order to optimize the financing structure and enhance firm value, we put forward a lot of countermeasure

    為了揭示當前我國上市公司融資結構的形成原因，本文首先在對國內外上市公司融資結構進行對比分析的基礎上，著眼於我國現實，對當前我國上市公司總體融資行為和融資結構進行了描述與檢驗；其次，從成本? ?融資成本、公司內部? ?治理結構和外部環境? ?融資市場三個方面系統、深入地分析了造成我國上市公司融資結構扭曲的原因；最後，以企業價值最大化為目標，給出優化我國上市公司融資結構的對策措施。
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