界限曲線 的英文怎麼說

中文拼音 [jièxiànqūxiàn]
界限曲線 英文
boundary curve
  • 界 : 名詞1 （相交的地方; 劃分的界限） boundary 2 （一定的范圍） scope; extent 3 （按職業、工作或性別等...
  • 限 : Ⅰ名詞（指定的范圍; 限度） limit; bounds Ⅱ動詞（指定范圍, 不許超過） set a limit; limit; restrict
  • 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...
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  • 界限 : 1 （分界） demarcation line; dividing line; limits; bounds; boundary; range; limitation 2 （限度...
  • 曲線 : [數學] curve; bight; bought; profile; net曲線板 french curve; irregular curve; curve board; splin...
  1. We compare the approximation of an analytic function f by its taylor polynomial and its poisson partial sum with the same number of terms and illustrate that for functions with limit zero at infinity and for bounded functions the poisson expansion provides a better approximation to the function than the taylor expansion

    在第三章中，介紹了rb曲線與poisson曲線的概念以及基本的幾何性質，指出了poisson基函數與有理bernstein基函數之間存在的關系，並且將解析函數的taylor逼近與poisson逼近進行比較。實例表明，對于在無窮遠處極限為0的函數以及有界函數， poisson逼近比taylor逼近效果要好。
  2. The paper studies the surface geometry of globoidal indexing cam by applying the theory of conjugate surfaces and the method of coordinate transformation, presents the equations related to the main inducement curvature of the cam profiles, analysis and deduces the equations of two circumscription curves, which judge if the conjugate surface could mesh properly. some calculate examples and conclusion are given. the surface equation of the globoidal cam and conjugate equation are established

    論文首先在分析空間嚙合原理基礎上，採用坐標變換法推導出弧面分度凸輪的工作廓面方程、嚙合方程和壓力角計算公式，對弧面分度凸輪的嚙合特性進行了深入的分析和研究，對判斷曲面能否正確嚙合的依據如兩類界限線方程以及誘導主曲率等進行推導，並給出算例。
  3. In different in terne die travel, the metal flow characterize in warm extrusion forming processes and the affection for the flow of metal stage which made by the difference between the blank bottom altitude and the axial direction limiting size in warm extrusion forming technique have been analysed we have gotten the equivalent strain field and the velocity field and other field variable that the blank in different in terne die travel and the die travel - load curve. at the same time, we have analyzed the contributing factor for the oil pump stator forming process optimized and achieve thereasonable die parameter for the war m extrusion forming finally, the optimized technics parameters were used into pilot production, then the qualified oil pump stator forging were produced, the analog results were compared with those of pilot production

    論文具體分析研究了不同成形工藝過程中金屬流動的特點，並對不同凸模行程下溫擠成形過程中的金屬流動特點、坯料連皮厚度（底部高度）與溫擠壓成形工藝中的軸向界限尺寸的差值對金屬變形階段的影響進行了分析，獲得了坯料在不同凸模行程下的等效應變場、速度場等場變量及凸模行程-載荷曲線，同時對油泵定子成形過程的影響因素等進行了分析，優化並獲得了合理的溫擠成形工藝及模具參數。最後，利用模擬優化獲得的各項工藝參數進行生產實驗，得到實際生產出的合格油泵定子件，並將模擬結果與生產實驗結果進行比較。
  4. A normal transform is introduced, and there are enough much grids in the region between the critical layer and the wall, where the variation of the disturbance is the quickest. the finite - difference of governing equations with fourth - order accuracy in the normal direction is utilized in full regions including points close the wall, and is very important for accurately discreting equations. the combination of global and local methods is implemented, and a new iterative formula is derived

    對于曲線坐標系下的拋物化穩定性方程，文中發展了求解的高效數值方法:引進法向變換，使得在臨界層與壁面之間的擾動量變化最快的區域有更多的法向網格點;導出包含邊界鄰域在內的完全四階精度的法向有限差分格式，這對方程精確離散至關重要;採用全局法和局部法相結合的方法及其新的迭代公式，大大加速收斂並得到更精確的特徵值。
  5. According to eigenvalue equation ( general formula ) of the energy method of the plane steel frame structure stability, and considering the restriction of the end of the column of the main steel frame and function of deflection curve gained from the differential balance equation general resolution, we get the equation for calculating the length coefficient of the main frame structure stability of the steel arch gate and the resolutions are also given

    根據平面剛架穩定性能量法特徵值方程（通式） ，考慮弧形鋼閘門主框架柱的柱端約束的特殊情況，求出撓曲線函數（試解函數）通解，得到弧形鋼閘門主框架柱穩定性計算長度系數方程。其中弧門主框架主橫梁式形框架的臨界荷載比較現行規范推薦的有限元法簡單方便、結果精確及物理概念明確等優點。
  6. Calculation of the structure clearance for rectangular tunnel in urban rail transit

    軌道交通明挖矩形隧道曲線地段建築限界的計算
  7. The impact tests were carried out at the mid - span, and internal pressures of ompa, 5mpa, lompa and 15mpa were used in addition to the tests with water. the critical energy of perforation and the ballistic speed was measured, and the various types of rupture were identified from the section of the test specimens. force - time curves and internal pressure - time curves were obtained from experiment

    實驗中記錄了沖擊力時程曲線和內壓時程曲線，測量了鋼管軸向和周向橫截面的變形，得到了不同工況下的破壞模態、臨界穿透能量以及彈道極限速度，並找到了臨界穿透能量隨內壓的變化規律。
  8. Equations of mesh, shorting contact line, undercutting limit line, meshing limit lines and the existence conditions, angle between the direction of relative speed and the direction of contact line, induced normal curvature about every point on the contact line are established. moreover, the paper also theoretically analyzed the error of the grinded gear surface. on the basis of the theory, the computer program is worked out to automatically produce the contact line and the boundary curves of mesh. analysis of meshing circs under different parameters can be done so that we can gain the best process condition

    首先對漸開面二次包絡理論進行了深入的探討，推導出了兩次嚙合的嚙合方程式、瞬時接觸線方程式、根切界限線方程式、嚙合界限線的方程式及其存在條件，相對運動速度方向與接觸線方向的夾角及接觸線上各點的誘導法曲率；此外，還對磨齒后工件的齒面誤差進行了理論分析；並在理論基礎上編制了相應的計算機程序，自動生成接觸線族及嚙合界限線，對不同參數條件下的嚙合情況進行分析，可以使工藝條件達到最佳狀態；最後研究了磨齒裝置，設計了磨齒機的傳動系統。
  9. Tooth surface equations and contact line equations of the involute worm gearing are established according to its machining methodology. meshing characteristics in rigidity condition are studied. these characters include the inductive normal curvature along the contact line on the worm surface, the first and the second limit lines during the engage of the worm gear, and the influence of the intersect angle between the contact line the relative velocity of the worm and the gear on transmission performance

    根據漸開線圓柱蝸桿傳動的創成方法，建立了漸開線圓柱蝸桿和蝸輪的接觸線方程式、齒面方程式，分析了漸開線圓柱蝸桿傳動的剛性嚙合特性，如蝸桿與蝸輪嚙合時的誘導法曲率、一類界限曲線、二類界限曲線和蝸桿與蝸輪間相對速度方向和接觸線方向的夾角對傳動性能的影響； 2
  10. Abstract : based on the operation data, the cold start - up and warm start - up curves of a czecho 200 mw steam turbine are worked out according to the operation rules ; the fem calculating models of the temperature field and stress field of the high pressure rotor are established, and the suitable boundary conditions are given ; the temperature field and stress field of the high pressure rotor are calculated and analysized during these two working situation

    文摘:在現場實測數據的基礎上，根據運行規程擬定捷制200mw機組的冷態啟動和溫態啟動曲線；建立高壓轉子溫度場和應力場有限元計算模型，確定相應的邊界條件；計算分析在這兩種工況下高壓轉子的溫度場和熱應力場。
  11. Under this circumstance, our treasury bond market exits lots of shortfalls which impede further development for this market. in this essay, combining with the experience in developing country " s experience, it analyses some challenges which confronted chinese bond market, such as liquidity in the interbank market has yet to be improved, duration in bond products are yet to be rational, a sound yield curve is yet to be take shape, the separation between exchange and interbank yet to be broken. in order to solving above issues, this essay suggests that it should develop market maker system to increase market liquidity ; manage balanced treasury bond ; issue short and long term treasury bond in proportion to improve duration and yield curve ; develop bond derivative products such as future trading, open style repurchasement, so it can provides tools for risk protection

    但隨著我國經濟的快速發展，金融市場已今非昔比，中國成為了世貿組織的成員，中國資本市場要走向國際化，利率的市場化是大勢所趨，在此前提下，我國國債市場還存在著很多不足，越來越阻礙著國債市場的進一步發展，本文結合世界發達國家的先進經驗，剖析了我國國債市場存在的一些問題如：流動性有待改善、國債期限結構不合理、無法形成科學合理的益率曲線、交易所市場與銀行間市場割裂等，為解決這些問題，本文建議應發展做市商制度以提高市場流動性；實施國債余額管理，發行短期國債及長期國債，改善國債期限結構，以形成科學合理的收益率曲線；發展債券衍生金融創新工具如國債期貨交易、開放式回購等，為投資者提供避險工具等等。
  12. Can only trim single curve at this time. can only trim single first bounding curve at this time. can only trim single second bounding curve at this time

    這些出錯消息反映了草圖生成器中的當前限制，即如果選擇了非關聯的選項，那麼一次只能修剪一條曲線。這包括邊界曲線和要修剪曲線的線串。
  13. Based on the method of limitation analysis of soil plasticity, researching from the soil arching mechanism of soil - nailing retaining, the upper limit of the critical height of soil - nailing slopes and the minimum horizontal length from coping of the potential slide surface to the edge of deep excavation are obtained through the analysis to weight of soil and vertical loading and the mechanism of soil and soli - nailing acting reciprocally

    摘要基於土的塑性極限分析方法，以均質土坡為例，從土釘支護結構的準粘聚力理論出發，綜合考慮土體自重、坡頂的條形荷載，以及土釘與土體的相互作用的機理，推導出了土釘支護的臨界高度的上限值和潛在螺旋曲線滑動面在坡頂方向距基坑邊沿的最小水平距離解析表達式，可供基抗支護設計參考。
  14. Through constituting appropriate homotopy equation, we convert ncp ( f ) to solving the homotopy equation. without assumption of regular or non - singularity for vf ( r ) ( which is the jacobian of f ( x ) ), we prove that the homotopy equation has a bounded solution curve starting from ( w ( 0 ), 1 ), and its end point is the solution of ncp ( f )

    在不需要非線性映照f （二）的jacobian矩陣甲f （二）正則或非奇異的限制下，我們證明了所構造的同倫方程有一條從（二（ 0 ） ， l ）出發的有界的解曲線，而其終點就是我們要求的ncp （ f ）的解。
  15. Firstly, under the curvilinear coordinates, mathematical model for wave propagation in water of slowly topography is presented. the model is suitable to arbitrary boundary shapes and overcomes the limitation of other models with algorithm transformation

    首先，基於曲線坐標系，建立了緩變水深水域波浪傳播的數值模擬模型，模型適宜於任意變化的邊界形狀，克服了各種代數坐標變換的局限性。
  16. 3. the test study indicates that the load - deflection curves of frp reinforced concrete beams reinforced can be divided into two linear stages through the boundary point of initial cracking

    試驗研究表明，纖維增強塑料筋混凝土受彎構件的荷載撓度曲線以截面初裂為界限點分為兩個線形階段。
  17. By using the arrived fundamental solution, combined with the " pseudo - traction " method and the boundary collocation, the stress intensity factor for crack in a finite plate under compressive loading are solved, the effects of crack direction and boundary condition on the stress intensity factor are analyzed, and the varying curves of the sif along with the width are given

    將所得的基本解與「偽力法」 、邊界配置法相結合，得到了有限板在壓縮荷載作用下應力強度因子的解法，分析了裂紋方向和邊界條件對應力強度因子的影響，給出了應力強度因子隨板寬的變化曲線。
  18. In the aspect of the time - optimal control algorithm, with the special trajectory, a method for seeking scalar velocity bound curve and scalar acceleration limit has been proposed, which fully considered the dynamics nonlinear

    在機器人時間最優控制演算法方面，提出一種在特定軌跡約束下尋求標量速度邊界曲線和標量加速度極限分佈的方法，其充分考慮了機器人動力學的非線性因素。
  19. By analyzing the scalar velocity bound curve and combining distribute of acceleration limit, a time - optimal control algorithm was designed. the results of experiments show it can make full use of the capacity of motor while realizing the stability and positioning accuracy of system, solving the problem of time - optimal control

    通過對標量速度邊界曲線的分析，結合加速度極限分佈情況，設計了一種在特定軌跡約束下機器人時間最優軌跡規劃演算法，以在保證系統穩定性和定位精度的前提下，充分發揮電機的性能。
  20. In the inversion of well - log and the extraction of features, the walsh function and sequence analysis is introduced, which raises the vertical resolution, protrudes the limit of layers and extracts more effective features

    沃爾什函數及序譜分析被用到了測井曲線反演與特徵提取上，結合測井曲線的短期平穩性，提高了測井曲線的縱向解析度，突出了薄層和層段界限，並提取了有效的序譜特徵。
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