曲面成形 的英文怎麼說

中文拼音 [qūmiànchéngxíng]
曲面成形 英文
curve generating
  • 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...
  • 成 : Ⅰ動詞1 （完成; 成功） accomplish; succeed 2 （成為; 變為） become; turn into 3 （成全） help comp...
  1. With the development of computer technology and free - form surface modeling, body plan description on the computer has been converted into hull surface model simulation in which more information is included so that hydrostatic properties calculation can be carried out with hull information directly

    隨著計算機技術與復雜曲面造型技術的發展，計算機上的船體型線的描述，目前已發展成為三維曲面乃至三維曲面實體表達。與線框圖相比，三維圖形中包含的信息更為豐富，實現了計算機上船體模型的模擬。
  2. In the course of working, ， the plow will make use of the shuttling method so that it can dig alternately either on the left or on the right. compared to the unilateral plow, it can improve the productivity because it can help leave off the soil 、 take from the consumed energy and reduce the empty journey. to meet the requests above, we will use a remote cylinder with both a small cubage and double functions, approximately designing the plow to be columniform and symmetric. after the experiment for a period in the field, we found that the most frayed areas had happened at the places of both plow shank and share and at the same time the base of the remote cylinder had ruptured suddenly

    與單向犁相比，其優點在於：耕地無開、閉壟，地表平整，降低了耕后整地的能量消耗，減少了地頭的空行程，因而大大提高班次生產率。為了滿足犁體梭式作業的要求，我們採用了一隻小容積雙作用的液壓油缸；同時對犁壁曲面的形狀採用了近似圓柱形的對稱設計。但經過一段時間的田間試驗，我們發現：該犁犁胸部分的犁脛和犁鏵上的犁尖在工作中磨損較為嚴重；主犁梁和油缸缸體的連接部分（即油缸底座）突然發生了斷裂，造成整個犁體無法正常工作。
  3. The problems include catmull - clark subdivision surfaces ca n ' t precisely represent standard conicoid except paraboloid, and it ca n ' t modify the shape of limited surfaces when the original control mesh be given

    如： catmull - clark細分曲面無法精確表示除拋物面外的常規二次曲面；在給定初始控制網格的情況下，難以調整所生成曲面的形狀等。
  4. Therefore, the method of screen spreading is presented herein with the following basic feature : taking the surface of the perpendicular line at the end of the distortion and bottom as the datum plane, move the controlling point of every distortion part to the datum plane with the principle of changeless of geometry size, and then the spreading is formed

    為此提出一種屏幕展開方法，此方法的基本要點是，以扭曲面末端垂直線和底部起坡線所在的平面為基準面，將扭曲面各分塊的控制點按幾何尺寸不變的原則搬到基準面，即可形成展開圖。
  5. To select a cylindrical plane cathode ; to design proper focus electrodes in order to control the formation of beam in methods of solving equations, electrobath and simulation aided by computer. to correct effects of anode hole and work out curves of designing guns ; to discuss plasma cathode guns at last

    選用圓形平面陰極;設計恰當的聚束極形狀以控制電子束的成形，並使用解析法、電解槽法和數值方法三種方法進行設計;考慮陽孔效應對電子束傳輸的影響，修正陽孔效應，給出電子槍設計曲線;最後討論一下等離子體陰極電子槍。
  6. Due to the requirements of complex configuration of spatial curved surfaces and of continuity of fiber laying have becoming a difficult problem in cad technology for bicycle body frame of hybrid fibered compound material with multi - branch special shaped entire - body and sections of hollowed thin wall

    摘要對于多分支整體異形空心薄壁斷面混雜纖維復合材料自行車車架，由於復雜的空間曲面構形和纖維鋪設連續性要求成為其cad技術難題。
  7. According to the restriction of the generatrix line, bertrand surface can be constructed with the bertrand curve with broad sense group

    按照母線的約束，形成廣義白川德曲線族，進而構造出白川德曲面。
  8. This is the form of the fields set up by feeding electromagnetic energy into a resonator formed by two curved reflectors.

    它是將電磁波輸入由兩個曲面反射鏡組成的諧振腔后所建立的電磁場的形式。
  9. Some typical schemes are implemented via this data structure ( loop subdivision, catmull - clark subdivision, do - sabin subdivision, hybrid subdivision, adaptive subdivision ). the technique of opengl is utilized to accomplish some basic operations, such as rotation, zoom, pan, pick and so on. finally the algorithms studied by our research group are integrated, and a prototype system based on subdivision surface is developed

    （ 4 ）改進了適合於曲面細分的的翼邊數據結構，並實現了典型的細分演算法（ loop細分、 catmullclark細分、 doo - sabin細分、混合細分、自適應細分） ；採用opengl技術實現了旋轉、縮放、平移、拾取等圖形的基本幾何操作；最後將本課題組研究成果加以集成，開發了一個基於細分曲面的原型系統。
  10. Therefore, these canines must stand far apart and be of good length so that the front surface of the muzzle is broad and squarish and, when viewed from the side, shows moderate layback

    所以下犬齒必須有足夠的長度，而且彼此間有足夠的距離，以形成口吻前部的曲面，從側面觀察顯得有點方、有點寬、還有點向後。
  11. Then a high - degree geometric continuity blending surface is obtained with transfinite interpolate method. ( e ) g3 blending surface with approximation can be constructed by lofting if geometric invariant errors are given, the surface can be converted to b - spline, nurbs form for the purpose of system aggregation

    最後，為滿足曲面造型系統集成的需要，在保證曲率、曲率導數和撓率精度情況下，將上述研究結果應用於曲面放樣逼近方法，得到參數過渡曲面轉換成b樣條曲面或nurbs曲面的形式。
  12. In this example, then, the surface forms a virtual image 180mm to the left of the vertex.

    因此，在本例中這曲面在頂點左方180mm處形成一虛象。
  13. In this paper, we first reconstruct a second order polynomial surface to approximate the original point model in the local area of each point, which is then restricted within a so - called - confidence region, producing a - surfel

    摘要在每個點附近重建一個二次多項式函數曲面逼近原點模型，並根據逼近誤差將每個重建曲面限制在稱為置信鄰域的范圍內，從而形成一個面元。
  14. From the feature of the force and deformation of the tpih, 5 different elements are used to mesh the different zones of the tube, which are structural beam 3d elastic 4, structural pipe plastic straight 20, structural pipe elastic elbow 18, structural shell elastic 4 node 63 and contact 3d pt - to - surf 49 ; the contact problem is assumed to be flexible - to - flexible ; the temperature field is assumed to be body load. a mechanical model corresponding to reality has been established for numerical simulation. based on the above, the 3 - d fem numerical simulation of tpih has been carried out by using the ansys program

    針對加熱彎管過程的受力和變形特點，採用三維梁單元、三維塑性直管單元、三維彈性曲管單元、三維殼單元與三維點對面接觸單元等5種不同的單元分別對管毛坯不同區域進行劃分，並對接觸單元採用柔體-柔體的處理方法，將溫度場作為體載荷處理，建立了符合實際的加熱彎管問題數值模擬力學模型：在此基礎上，應用商用軟體ansys對加熱彎管過程進行三維有限元模擬與研究，獲得了成形時推力、彎矩、支撐力大小及其變化趨勢。
  15. Abstract : a new waveguide which can change the wide wall of a rectangular waveguide into a symmetric arc wall is named as a cam - rectangular waveguide. comparing to sectoral waveguide, the new waveguide has the same voltage characteristics and is easier to be produced and fixed. an approximate formula of the dominant mode fields and the normalized conductance of a longitudinal resonant slot cut in the curved wall of a cam - rectangular waveguide are given. a resonant slot linear array in c & x band is designed, in which the slot voltage distribution is equiphase and the input is matched. the input voltage stationary ware ratio and the h - plane pattern of the antenna are measured. the experimental results show the conformance with theoretical results

    文摘:把常用的矩形波導一個寬面改成圓弧形構成的波導稱為圓突-矩形波導.這種波導與扇面波導相比：電性能相當；波導管結構更加簡單，容易加工，便於安裝.文中給出圓突-矩形波導中主模場，圓曲面上縱向槽歸一化諧振電導近似公式.設計了c和x波段波導曲面縱向諧振縫隙線陣，縫隙電壓相位為同相分佈，輸入端匹配.實際測量了天線輸入端電壓駐波比和h面方向圖，理論與實驗相吻合
  16. Abstract : the solid modeling of computer drawing technique has been applied to the pyramidal roof of ancient chinese pavilion, mainly concerning in the forming of the curves and surfaces

    文摘:用實體造型方法探討中國古建築方亭鉆尖頂部的計算機繪圖技術.同時，對形成該頂部的曲線和曲面進行了較深入的分析
  17. Crowding model is used to form multiple niches in fitness landscape, while clustering algorithm eliminates genetic drift in each inner niche

    擁擠模型在適應值曲面上形成多個小生境，聚類演算法消除了每個小生境內部的基因漂移現象。
  18. Technique of " a steel by line heating and cooling " have several characteristics such as full of techniques and difficulties etc, it is based on experience of experienced workers and use the fire heat steel plates in predetermined lines calculated by expert system, then cool them down by water, so the difference between forces of extention and contraction, the steel plates will curve to their desired shape

    水火彎板是造船生產中技術性強、難度大，具有很強特色的一種經驗性鋼板曲面成形的熱冷加工工藝方法。這個項目就是和大連造船新廠合作的「大型復雜曲面鋼板水火加工智能機器人」 。
  19. Automatic fiber placement ( fp ) is a new manufacture technique to produce the affordable composite materials. in fp process fiber is placed on the surfaces of the model by the press roller to form composite structure with low manufacture cost, high efficiency and good quality

    自動鋪絲技術是一種新型復合材料低成本自動化製造技術，它是通過壓輥傳遞一定的正壓力將纖維鋪設在芯模曲面上形成復合材料殼體結構。
  20. Secondly, based on the theories of computer graphics and computer aided geometric design, and according to the traits of automobile panels, the related theory and experience about 3d geometric expressing of automobile panels are described. it is studied to the constitution methods of typical surfaces forming the surfaces of automobile panel, fairing quality and error analysis and optimization of reconstruction surfaces, and the storage structure of " half " edge for 3d model, data changes in different stamping steps and data exchange among the different software

    然後，在計算機圖形學和計算機輔助幾何設計等理論的基礎上，根據汽車覆蓋件的特點，歸納總結了適用於汽車覆蓋件三維形體幾何表達的相關理論和經驗；研究了構成汽車覆蓋件曲面的典型曲面構造方法，重構曲面的光順品質分析、誤差分析與曲面品質優化的方法，三維重構模型的「半」邊數據結構、不同沖壓工序中的數據演化以及不同軟體平臺之間的數據交換；提出了根據周邊曲面的形狀特點構造交匯曲面的方法。
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