弧段 的英文怎麼說

中文拼音 [húduàn]
弧段 英文
arch section
  • 弧 : 名詞1. [數學] （圓周的任意一段） arc2. （古代指弓） bow
  • 段 : Ⅰ量詞（部分） section; segment; part; paragraph; passage Ⅱ名詞（姓氏） a surname
  1. Dynamic model of satellite is built up with astronomic method, and a short - arch forecast arithmetic of satellite orbit in short arch with single site is given, which is of high precision when only angle data is available

    本文使用了天文方法建立了人造衛星運動的數學模型，給出了一種只使用單站短弧段測角數據對人造衛星軌道進行高精度預測的演算法。
  2. Fluid noise mainly comes from out put pulsation of rate of flow, the main reason of out put pulsation of rate of flow is the instant high pressure return flow that obturation cubage produced when the big round curve pressure transition. the v trough on the port plate can reduce the fluid noise. in this paper, the author based on the acting of dam a river and condensability of liquid and used matlab language as tool to calculate the v trough on the original port plate and drew out the p - t diagrammatic curve and analyzed its shortcoming and improved the design of original v trough and got that the best size of its angle was 12. 3 and its length was 5mm and the cross section was an equilateral triangle

    流體噪聲主要來源於輸出流量脈動，造成輸出流量脈動的主要原因是閉死容積在大圓弧段壓力切換時產生的瞬時高壓迴流，在配流盤上開設v型尖槽可降低因高壓迴流而引起的流體噪聲，本文以截流作用和液體的可壓縮性為理論依據，以matlab語言為工具，對原配流盤上的v型尖槽進行了理論計算，繪制出p - t圖線，分析了它的不足，並對原有v型尖槽進行了優化設計，得出了v型尖槽的最佳幾何尺寸：配流盤平面上的v型尖槽的兩邊的夾角為12 . 3 ，槽長5mm ，槽的橫截面為等邊三角形。
  3. First the sketch / datum plane is fitted by least - square distance, then the extruded direction or axis with the flank points of the cloud is extracted in quadratic paogramming arithmetic, and certain points projected to gain 2d sketched datas. feature points are defined to segment the sketch datas, and the sketch profile is generated by fitting separately the line and circle segment

    使用最小二乘方法擬合草圖基準平面，採用二次規劃方法提取拉伸方向和旋轉軸線，然後將數據點投影以獲取草圖數據，通過柵格劃分提取草圖邊界輪廓數據，再對這些邊界數據進行基於特徵點的分割，以直線和圓弧段擬合出草圖輪廓。
  4. Sectors of it represent corresponding fractions of a wavelength.

    它的各個弧段則代表一個波長的相應分數。
  5. A control method is presented where least square arc approximation and timed interpolation are employed. using it, the number of segments of fitted curves is made minimum while the accuracy is guaranteed, so that data transmission between cad and cnc systems is decreased and setted feeding rate can be realized. this method has already success fully been used for flame cutting and controlling saddle - backed curve for pipe connection when feeding rate is required to be higher

    提出了一種採用最小二乘法圓弧逼近及定時插補控制方法，在保證精度的前提下，可使擬合圓弧段數最少，從而減少cad系統與cnc系統的數據傳送，可實現給定進給速度.該方法已成功地應用於要求較高進給速度的接管馬鞍型曲線火焰切割擬合控制
  6. Arc of admission

    進氣弧段
  7. Momentum integral equation of turbulent boundary layer on ogree section of spillway dam in considering the gravity and centrifugal force

    考慮重力及離心力的溢流壩反弧段紊流邊界層動量積分方程
  8. 8. this thesis initiates the 8 - quadrant angle computing method. this method can rapidly recognize the adjacency relationship of all the edges linked with the same node and avoid the complicated computing of trigonometric function. furthermore, this method can rapidly construct the adjacency relationship of all the arcs linked with the same node, in the construction of topological data structure in gis, which is helpful to the rapid construction of topological structure

    創造性地提出了a象限角度計演算法，它可以實現快速確定與同一結點相連接的所有邊的鄰接關系；避免了復雜的三角函數計算，而且該演算法還可以在gis的拓撲數據結構建立過程中，快速地構建與同一結點相連的所有弧段間的鄰接關系，為拓撲結構的快速建立創造了條件。
  9. We extend this method to the problem of a domain which boundary is an open arc or an open segment. in this paper, we simulate the singularity of solution in extreme point of open arc or open segment by singular element

    本文還把此方法推廣到求解區域邊界是直線段或者開弧段的情況，採用引入奇異邊界單元的方法來模擬解在開邊界端點附近的奇異性。
  10. With fortran power station 4. 0, we make galerkin boundary element method program for solving laplace equation on region which boundary is a closed curve or an open arc, and the numerical experiments also prove this method is reliable. last we test the error of galerkin boundary element by numerical experimentation

    最後利用fortranpowerstation4 . 0程序語言分別編寫了用galerkin方法求解區域邊界為閉曲線及區域邊界為直線段或開弧段laplace方程的計算機程序，通過幾個算例證明了該方法是有效的、是可行。
  11. The arc segment ready for being printed should be positioned between two fixed shores. if the segment is too much long, please divide them into smaller segments

    要列印的弧段應位於兩個固定支撐柱之間，內容較長時應分段進行。
  12. Basing on key concepts and techniques in object - oriented modeling, the thesis discusses design of object - oriented spatiotemporal data model, and entirely defines and describes spatiotemporal object types that are of concern in a stdm. organization of temporal attribute data and temporal treatment of spatial object are described. spatiotemporal object operators and spatiotemporal index are logically designed

    論文對模型的時態屬性數據組織和空間對象的時態處理進行了描述，提出作為節點和弧段，空間位置和范圍是它們的本質屬性，所以只要節點和弧段的空間位置和范圍發生變化，則節點和弧段發生生亡事件。
  13. The algorithm makes use of the node - arc structure of graph and depth - first - search, have realized the retrieval of optimum path in virtual navigation

    該演算法以圖的節點?弧段結構結合深度優先搜索實現了自動游覽中最優路徑的檢索。
  14. Under the premise of ensuring its accuracy of point positions, not only is vector data obtained but its compressing is also realized with a quicker speed, more accuracy and smaller storage device

    該方法在確保點位精度前提下，可獲得以弧段為單位的矢量數據，同時依據線狀要素的形態取樣，從而達到壓縮數據目的，此演算法處理速度快，精度高、存儲量小。
  15. At the toe of thc stepped spillway if exchange a series of steps for arc section, the highe enersy dissipation can be got bu the pressure is higher in downstream icction

    在壩趾處，不設反弧段比設反弧段時的消能率高，但壩下水平段的壓強值較大。
  16. Our product line includes honeycomb seal for turbine machines, such as aeroengines, steam turbines, gas turbines and industrial turbomachines, metallic honeycomb products including aerospace quality honeycomb core materials, honeycomb flow staightener and honeycomb rolls for nonwoven, emi shielding products and metallic catalytic converter for automobile, etc

    主導產品蜂窩封嚴產品安達泰克科技為航空發動機燃氣輪機汽輪機等透平機械的製造改造和維修提供高質量的蜂窩封嚴產品，包括各種規格的蜂窩封嚴弧段和封嚴環。
  17. Nc machining of three arc - typed sections

    三弧段型面聯接的數控加工
  18. The curvature radius was derivated and the contact stress of the three - arc - sect isometric type surface was calculated through the elastic dynamics theory

    應用彈性力學理論，推導出接觸點的曲率半徑，對三弧段等距型面聯接進行接觸應力計算。
  19. When one circle of angle observing data is available, a new kind of method, diagram approach, is presented when only short - arc angle measurements is available, the genetic algorithm ( ga ) is used for orbit determination

    當具有半四以上觀測弧段時，提出了一種圖解法確定衛星軌道；當觀測弧段較短時，採用遺傳演算法確定衛星軌遭。
  20. In harsh climate region, mere exists obvious local stress concentration near the upstream and downstream of the exposed - in - winter horizontal surface of the rcc dam, and the surface of spillway bucket though heat insulation is applied on the surfaces, tensile stress still exceeds the allowable one of concrete. this paper puts forward to adopt preset crack to avoid occurring more cracks. the special crack model is applied to simulate the dam preset crack, and the joint model of fracture mechanics is induced into strain - soften model

    在結構措施方面，針對嚴寒地區高碾壓混凝土重力壩壩體越冬層面的上、下游面附近及溢流壩堰面反弧段表面有明顯的局部應力集中象現，在已採取一定的表面保溫防護的條件下，拉應力仍然超過混凝土容許拉應力，開裂難以避免，進而提出設置碾壓混凝土壩表面預留縫結構措施並對該措施進行深入研究，包括預留縫的擴展穩定和壩體沿預留縫的穩定性，以避免大壩在無措施部位開裂，解決大壩越冬層面水平施工縫的開裂問題。
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