法曲率向量 的英文怎麼說

中文拼音 [xiàngliáng]
法曲率向量 英文
normal curvature vector
  • : Ⅰ名詞1 (由國家制定或認可的行為規則的總稱) law 2 (方法; 方式) way; method; mode; means 3 (標...
  • : 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...
  • : 率名詞(比值) rate; ratio; proportion
  • : 量動1. (度量) measure 2. (估量) estimate; size up
  1. And understanding and studying the spectral features and variation rules of geo - targets in the experimental area, raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets, realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio. it is suggested that " red edge " range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed

    研究結果如下:首先針對荒漠化地區的地物特徵,對高光譜數據不同波段的數據質、波段組合進行了評價,提出了適用於荒漠化監測的基本波段選擇集;初步了解和掌握了研究地區的地物光譜特性及變異規律,進一步明確了掌握地物光譜特徵和變異規律是用成像光譜儀數據提取地物信息的基礎;發現了基於光譜整體形狀的分類方在很大程度上能夠消除由於傳感器、地物目標觀測方之間的角度變化引起的反射線整體平移的「同物異譜」現象,對于譜形相似而整體反射的值相差較大的兩類地物,通過引入均值和方差圖像參與分類得到解決;研究還表明在植被「紅邊」范圍內的波段是進行荒漠化監測的主要特徵波段,這些波段與植被生物和蓋度都有密切的關系,是開展精細植被分類研究和植被定反演的重要基礎;像元的導數光譜分析可以消除土壤背景的影響,是進行植被生物和蓋度定反演的有力工具;建立了荒漠化監測主要評價因子的定反演模型,並分析了模型的適用性。
  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消耗,減少了地頭的空行程,因而大大提高班次生產。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,造成整個犁體無正常工作。
  3. 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半徑和手術后最終的半徑作了定的研究。
  4. Chapter 5. based on the measured refractive index distribution curve, according as the theoretical model of light transmission in the grin medium, using quadrivalent runger - kutta method to carry out the light tracking, by this means the mainly imaging character index of the micro - lens such as foci, longitudinal and transverse spherical aberrations aberration etc is calculated. i

    第五章從測所得折射分佈線出發,根據梯度介質球內光線傳輸的理論模型,用四階runger - kutta方進行光線追跡,計算了此種梯度球的縱橫球差等光學特性,給出所製作梯度折射微球透鏡成像性能的評價。
  5. The contacting measurement method with a double probe is put forward after the detailed analysis of the state - of - the - art measuring methods of the thickness of wall. firstly, the theory - profile generatrix is built, and then the movement curve of the track of joint center is constructed, which aims at making the joint center move along the movement curve and keep the fixed sensor touching the wall. the measuring sensor examines the line in its normal direction of the interior wall all the time, the data from the sensor is the thickness value of the wall

    論文通過分析國內外變回轉體壁厚測的現狀,提出了雙測頭接觸式測方案:通過構造理論輪廓母線,建立鉸鏈中心的運動線,使鉸鏈中心始終沿運動線運動,以保證固定觸頭與傳感器測頭的連線始終在內壁線方上,從而傳感器測頭所得的數值即為壁厚值,該方案經模擬測試實驗取得了預期效果。
  6. In the paper, based on the method of low pair replacing with high pair, the problem of cam design was transferred to that of linkage design. by means of rotary unit vectors, the equations of displacement, velocity and acceleration of the replacement mechanisms were developed. and then, the virtual linkage ' s length and direction were deduced

    論文基於高副低代原理,將平面凸輪機構設計與再現函數的平面連桿機構設計統一為同一種方,運用圓函數建立代換機構的位移、速度、加速度矢方程式,求取虛擬連桿桿長和方,由此展開凸輪理論廓線、實際廓線、半徑和壓力角的求解,並得出用圓形刀具加工凸輪時刀具中心的軌跡方程。
  7. First according to the fact that tangential components of the evolution do not affect the geometric shape of the evolving curves, we introduce the evolution equation of geometric quantities for the general planar curves. then we describe the work of gage - hamilton briefly. last we consider a special curvature flow of curve which evolves with speed function of the principal curvatures along the inner norm and show that convexity of the curve is kept and its length and area are contracted if the initial closed curve is smooth and convex. so the final shape of the curve will be a point in finite time

    首先根據線在切上發展是不影響線的發展形狀,我們引入了線的一些幾何變的發展方程;其次我們簡要地回顧gage - hamilton研究線發展的一般步驟;最後我們考慮沿線的內線以的函數為發展速度的一類特殊的線族,證明了在初始線為凸的閉平面簡單線條件下,線將保持凸的,並且它的面積和周長將同時收縮,並在有限時間內成為一個點。
  8. As a result, ( i ) let k ( x ) be the function assign to each point x of m the infinimum of the sectional curvatures of m at that ponit, if k ( x ) satisfies, then m is totally umbilical. ( ii ) let q ( x ) be the function assign to each point x of m the infinimum of the ricci curvatures of m at that ponit, if q ( x ) satisfies q > 1 / 4 ( n - 2 ) ( c + 4h2 ) - 1 / 4nc, then m is totally umbilical, ( iii ) let a be the square length of the second fundermental form, if satisfies, then m is totally umbilical

    ) )中具有非零平行平均的緊致全實偽臍子流形m ~ n ,得到了( ? )如果m ~ n在其點x的截面的下確界函數k ( x )滿足條件:則m ~ n是全臍的( ? )如果m ~ n在其點x的ricci的下確界函數q ( x )滿足條件:則m ~ n是全臍的。 ( ? )如果m在m中的第二基本形式h長度的平方滿足條件:則m ~ n是全臍的。
  9. 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的截面恆正,則m包含在r ~ m ( c )的一個超球面內;對于常空間及r ~ 4 ( c )中具有常平均的緊致面m ,如果m的高斯處處大於零,則m或為r ~ m ( c )中的全測地面或為一球面。這里m上的等參截面是m上整體定義的單位場,使得m關於它的平均m _ 1 ( )是常數。
  10. Based on structural dynamics, different damage diagnosis index, such as modal frequency variety, modal assurance criterion, co - ordinate modal assurance criterion, modal strain energy, remains force vector, modal strain, rigidity change, flexibility matrix, modal curvature and so on, are studied in this thesis

    基於結構動力學理論,本文論述多種損傷識別指標的基本原理和計算方,主要包括:固有頻變化、模態置信因子、改進的模態置信因子、模態應變能、殘餘力、應變模態、剛度變化、柔度矩陣、模態等。
  11. Using the similarity between plane elasticity and plate bending, this paper successfully fulfils the identification of rolling vector and establishes a general method, the curvature lumping method, to represent the rolling vector by the use of simple displacements vector

    利用平面彈性和板彎的相似性,本文實現了角卷的辨識並得到了用簡單位移表示角卷的一般方?堆集,打通了與有限元通用程序的介面。
  12. This part firstly studies the relation between spectral transmission of the optical system and the thickness of medium. then a linear search algorithm base on analysing of the shape of curve is discussed. the simulation results show that the fitting error and the computing time of the algorithm satisfy the practical measuring requirements

    本論文首先討論了光譜透過與各異性介質厚度之間的數學關系,然後在分析線形態基礎上進行全值匹配,模擬表明,該演算可以實現線完全擬合,擬合時間均在1秒以內,完全符合實際測要求。
  13. Finally, the paper provides the theoretic method suitable for calculating the tensioning elongation of the tendons, and checks the method as well by measurement data from several engineering projects

    同時,分析了預應力束的束效應引起的鋼絞線的重新排列,以及彎段等效徑荷載產生的徑位移,最後得出了適合小半徑預應力束張拉延伸計算的理論方,並通過多個工程實測數據進行校驗。
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