正曲率 的英文怎麼說

中文拼音 [zhēngqūlǜ]
正曲率 英文
positive camber
  • 正 : 正名詞（正月） the first month of the lunar year; the first moon
  • 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...
  • 率 : 率名詞（比值） rate; ratio; proportion
  1. 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。
  2. Chapter 3 erected the relationship between refraction error and cornel ablation depth in theory. the paper proposed various mathematical models which can be used for proceed the simple myopia, simple hypermetropia, compund myopia astigmatism, compund hypermetropia astigmatism, simple myopia astigmatism, simple hypermetropia astigmatism, mixed astigmatism. the influence of the astigmatic axis and the degree of astigmatism on the correction field is discussed. wavefront aberration guided excimer laser cornea ablation is a main method of customised corneal ablation

    以數學的方法研究出了屈光性單純近視、屈光性單純遠視、復性近視散光、復性遠視散光、單純近視散光、單純遠視散光、混合性散光屈光矯正的物理模型；並揭示了不同軸位的轉換規律，對不同散光情況下的初始角膜兩個不同方向的曲率半徑和手術后最終的曲率半徑作了定量的研究。
  3. It is now necessary to introduce a sign convention for radii of curvature.

    現在必須介紹曲率半徑的正負號規則。
  4. Long focus object lens of three color achromatic aberration is one of two posers of optical design, using this method can get a perfect result. compared with pw method, the first results received from the wave - deviation method are more accurate and more rapid

    使用此數學模型編的光學自動設計程序，也可以說是光學鏡頭設計的一種新方法，即實現自動選玻璃，求解初始結構（曲率半徑r ，厚度d等）和自動校正像差和優化系統等。
  5. This paper deals with the regular curves in a riemannian manifold with constant sectional curvature and the affine starlike curves in r2, r3 and r4

    本文研究了具有常截面曲率的黎曼流形中的正則曲線及二、三、四維空間中的仿射星形曲線。
  6. The manufacture system of filament winding ( fw ) and fiber placement ( fp ) is the one of advanced equipment for frp products. it can be used to produce the products of the positive curvature gyration bodies, such as container cylinder, oil tank, tube, orb, cone, assembled body and so on. furthermore, it is more suited to machining some products of the complex bodies such as the surfaces of the negative curvature gyration bodies, the shell components which have slots and reinforced tendons

    纖維纏繞/鋪放聯合製造系統是纖維增強塑料（ frp ）製品生產的先進製造裝備之一，可用於製造如圓筒容器、儲罐、管、球、錐形體或組合形體等正曲率回轉體的製品，更適用於製造含有負曲率的回轉體表面、具有深槽、加強筋的殼體構件等外形相對復雜的纖維增強塑料製品。
  7. And then, in this part, following the idea of topping [ 51, 52 ], we will show an isoperimetric inequality ( 6. 3. 1 ) on surfaces of non - positive gaussian curvature by means of the curve shortening flow on surfaces, this inequality can be considered as a generalization of the banchoff - pohl inequality in the euclidean plane

    然後，仿照topping [ 51 ]和[ 52 ]利用平均曲率流證明等周不等式的想法，我們利用曲面上的曲線縮短流在gauss曲率非正的曲面上證明了一個等周不等式（ 6
  8. On the other hand, the conformal deformation ' s problem is to find a metric on h2 ( - 1 ), conformal to g, with the given function k as its gaussian curvature, that is, it is important for us to study the solvability of the conformal gauss curvature equation in geometry analysis. the problem that the conformal gauss curvature equation may have a solution for every nonegative holder continuous function k ( x ) is also an open problem

    ） = e ~ （ 2u ） g使k是（ ? ）的高斯曲率，即共形高斯曲率方程的可解性研究是幾何分析中的一個重要問題。當預定的函數k取正值時，共形高斯曲率方程解的存在性命題作為一個猜測至今未得到解決。
  9. Because the data mutate on the position that is the edge, the normal curvature on some orientation changes from positive to negative. so it is thought whether some point is judged the edge - point by this character

    由於邊緣是圖像上像素發生突變的位置，所以在圖像曲面上某一方向的法曲率值會出現由正到負的變化，故此應用這個性質來判斷曲面上某點是否為邊緣點。
  10. After years elaborate design, he described the space - time as a curved, multi - dimensional and forth raised space, an end of which is absolute space - time and the other end is a black hole

    歷經數年時間，他對第二時空做了精心的設計，把其描述成彎曲的，多維的，並向外凸起的正曲率空間。
  11. The space geometry is open and negatively curved as a saddle. if the density equals to the critical density exactly, the space is flat as a sheet of paper. if the density is greater than the critical density, the space geometry is closed and positively curved as a ball

    為負馬鞍形的開放宇宙假若密度和臨界密度相等，空間曲率為零，宇宙如一張白紙般平坦假若密度高於臨界密度，它則是一個空間曲率為正球形的封閉宇宙。
  12. In auto smooth method, we use the curvature and depth analysis to look for " bad point " automatically, and take the latitudinal curve to modify the surface ; referring to the tech of image processing, we import a interactive method to smooth surface based on image smoothing

    在自動光順方法中，利用曲率分析及深度分析自動尋找「壞點」並採用緯向曲線重生成的方法予以修正；結合圖像處理的內容，引入了基於圖像平滑的互動式曲面光順方法，取得了滿意的效果。
  13. Correction for meridian curvature correction

    子午線曲率改正
  14. Also, general relativity defines non - inertia space - time as a space of riemann. for riemann space has positive curvature, we have to doubt about where the minus curvature space is

    廣義相對論把非慣性時空定義為黎曼空間，但由於黎曼幾何是正曲率空間，既然廣義時空是對稱的，我們必然要問，負曲率空間到哪去了？
  15. Under this flow, the convex initial curve will preserve its perimeter, enlarge the enclosed area and make its curvature to be positive definitely. and as the time lasts, it will become more and more circular, and finally, as the time goes to infinity, the curve will converge to a circle in the hausdorff metric

    本文證明在這種新的曲線流之下，閉凸曲線周長保持不變、所圍區域的面積不斷增大而曲率保持恆正（從而保持凸性） ，並且，隨著時間的推移曲線變得越來越圓，最終當時間t趨向于無窮大時，曲線在hausdorff度量意義下收斂到一個圓周。
  16. 3. based on the dynamic response of all damage cases, it discusses the indexes including frequencies, modal curvatures and their compounded index used in rbf networks. it is found that the method can identify the location and severity of the damage accurately and effectively and the compounded index is better than others

    3 .根據簡支工字鋼梁各損傷工況下的動力特性，分別研究了將頻率變化率、模態曲率變化及其組合參數作為徑向基網路的輸入指標時進行結構損傷識別的效果，發現基於徑向基網路的梁式結構損傷識別方法能夠正確識別損傷，且組合參數作為輸入指標時的識別效果更好。
  17. Could it be said that god favors positive curvature

    難道上帝對正曲率空間有偏愛？
  18. Geometric rigidity theorem for submanifolds with positive curvature

    正曲率子流形的幾何剛性定理
  19. Volume growth and curvature decay of complete positively curved k hler manifolds

    完備正曲率凱拉流形的體積增長與曲率衰減
  20. In the second part, we investigate the compact submanifolds m with the parallel isoperimetric section in the real space forms rm ( c ) and prove that if there exists a parallel isoperimetric section on m, and the sectional curvature of m is always greater than zero, then m is contained in a hyper - sphere ; and get that the gauss curvature of the compact surfaces m with constant mean curvature in constant curvature space r4 ( c ) is always greater than zero, then m is a totally geodesic surface or a sphere, where an isoperimetric on m means a unit normal vector field defined globally on m with m1 ( ) = constant

    （ 2 ）研究了實空間形式r ~ m （ c ）中具有平行等參截面的緊致子流形m ，證明了具有一平行等參截面的子流形m ，如果m的截面曲率恆正，則m包含在r ~ m （ c ）的一個超球面內；對于常曲率空間及r ~ 4 （ c ）中具有常平均曲率的緊致曲面m ，如果m的高斯曲率處處大於零，則m或為r ~ m （ c ）中的全測地曲面或為一球面。這里m上的等參截面是m上整體定義的單位法向量場，使得m關於它的平均曲率m _ 1 （ ）是常數。
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