球面幾何 的英文怎麼說

中文拼音 [qiúmiànjīhé]
球面幾何 英文
geometry of the sphere
  • 球 : 名詞1 （以半圓的直徑為軸 使半圓旋轉一周而成的立體; 由中心到表面各點距離都相等的立體） sphere; glo...
  • 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...
  • 幾 : 幾代詞1. （多少, 用於詢問數量和時間） how many 2. （表示不定的少數目） a few; several; some
  • 球面 : spherical surface; sphere球面艙壁 spherical bulkhead; 球面車床 spherical turning lathe; 球面反射...
  1. This paper analyses and explains several interferential images arising from autocollimation, and lays more emphasis on the analysis of the convex with identical property to a spherical reflector, introduces the relatios between reflection images and autocollimation images, and expounds how to form to judgment about interferential images

    摘要對自準值法測量時出現的幾個干擾像進行分析、解釋，著重分析了凸透鏡也具有球面反射鏡的性質，導出反射像和自準值法成像的關系，及若何判斷干擾像。
  2. As it is impossible to machine the helicoid gear surface with large module and a few teeth by gear generating, a four - axis milling was developed in this paper

    摘要針對大模數少齒數螺旋齒輪的加工特點，結合漸開線和擺線的性質，利用微分幾何工具計算出該類曲面的法矢，作為選取球頭銑刀半徑的依據。
  3. Many planets ( for example, ganymede, mercury, the earth, jupiter and saturn ) and stars ( for example, the sun ) possess intrinsic magnetic fields. the explanation for their existence and variation remains a great challenge to planetary scientists and astrophysicists. this article attempts to review some recent developments and difficulties in the study of magnetohydrodynamics for the electrically conducting fluid interiors of planets and stars. it is the fluid motions, usually driven by thermal convection, that generate and sustain magnetic fields through magnetohydrodynamic processes in planets and stars. in planets, the magnetohydrodynamic processes are strongly affected by the combined and inseparable effects of rotation, magnetic fields and spherical geometry. the key dynamics involves the interaction between the coriolis and lorentz forces. in the sun, it is the solar tachocline, a thin shear flow layer located at the base of the convection envelope, that plays an essential role in the solar magnetohydrodynamic processes which produce the 11 - year sunspot cycle. some results of a new nonlinear three - dimensional solar dynamo model are also presented

    許多行星（如木衛三，水星，地球，木星和土星）和恆星（如太陽）具有內部磁場.對這些磁場的存在和變化的解釋對行星科學家和天體物理學家是一個巨大的挑戰.本文試圖總結行星和恆星的導電流體內部磁流體力學研究的新近發展和困難.一般由熱對流驅動的流動通過磁流體力學過程產生並維持在行星和恆星中的磁場.在行星中磁流體力學過程強烈地受到轉動，磁場和球幾何位型的綜合影響.其動力學的關鍵方面涉及科里奧利力和洛倫茲力間的相互作用.在太陽中其流線，即處于對流層的薄的剪切流層在太陽的磁流體力學過程中扮演了一個基本的角色，並由之產生了11年的太陽黑子周期.本文也給出了一個新的非線性三維太陽發電機模型
  4. Finally, convergent geometry had an important effect on the perturbance coupling between the interfaces of the finite fluid. the attenuation factor of perturbance coupling from the outer interface in was greater than the one from the inner out

    本文研究表明：收縮幾何效應對有限厚度流體的界面之間的擾動耦合有重要影響，柱和球幾何中擾動耦合從外界面到內界面的衰減因子大於從內界面到外界面的情況。
  5. Different type methods to survey height by spherical geometry

    各類高程測量方法的球面幾何解釋
  6. In this article, physical equations and relative three - dimensional finite - difference formulae in cylindrical and spherical geometries were derived and two - and three - dimensional code in cylindrical and spherical geometries for direct - drive by laser was made, based on the lared - s code in planar geometry. it consisted of the processes such as the inverse bremsstrahlung absorption, electic heat conduction and fluid dynamics

    本論文在lared - s程序平面版本基礎上，推導了三維柱和球幾何中激光驅動的物理方程和相應的差分方程，編制了二維和三維柱和球幾何中激光驅動流體不穩定性的lared - s程序版本，主要物理過程包括：激光逆軔致吸收、電子熱傳導和流體運動。
  7. The strength of convergent shock was enhanced in cylindrical and spherical geometries than in planar geometry. the bubble became more wide and big and the spike became more narrow and long. it showed in spherical implosion that the spike close to the symmetrical axis grew faster than the ring one away from the symmetrical axis

    第四，利用lared一s程序模擬柱和球幾何內爆過程中rt不穩定性增長，表明收縮幾何效應對內爆過程中不穩定性的增長有重要影響，柱和球幾何中聚心沖擊波的強度大於平面情況，氣泡變得更加寬而大，而尖頂變得更加細而長。
  8. Secondly, nonlinear threshold of two - dimensional rt instability was analyzed in planar and cylindrical and spherical geometries. density amplitude was defined relating to instable interface and formulae of nonlinear threshold values for rt instability in three geometries were given, then the lared - s code was used to simulate two - dimensional rt instability in three geometries and simulation results agreed well with the formulae

    其次，討論了二維平面、柱和球幾何中rt不穩定性發生非線性偏離的閾值問題，給出了三種幾何中密度擾動振幅的非線性閉值公式，並且用lared一s程序進行了檢驗，計算結果表明柱和球幾何中的模藕合機制與平面幾何不同，存在幾何效應的影響。
  9. In addition, it was the sign of the initial amplitude growth rate, not the manner of the interface motion that determined whether the amplitude could increase. at weakly nonlinear stage, mode - coupling equations were derived in cylindrical and spherical geometries. it showed that the nonlinear terms were inversely proportional to the position of the interface in cylindrical and spherical geometries

    在弱非線性階段，推導了柱和球幾何中模耦合方程，結果表明：非線性作用項反比于界面的位置，界面的位置越小，非線性作用越強，反之越弱；同時柱幾何中模耦合方程的解表明，在收縮幾何中，擾動在界面兩側的發展是不對稱的，在弱非線性階段，不穩定性向內發展的部分受到慣性力的擠壓，而向外發展的部分受到慣性力的拉伸。
  10. At linear stage, the theoretical growth rate for the rt instability in cylindrical and spherical geometries was enhanced ( or reduced ) due to the decrease ( or increase ) in the perturbation wavelength during an implosion ( or explosion ). even in the absence of an acceleration the perturbation could grow in the convergent geometries. the amplitude growth rate was proportional to the cube of the convergent ratio in spherical geometry and to the square of the convergent ratio in cylindrical geometry

    在線性階段，已有的研究表明：一方面，在內爆（或外爆）過程中擾動波長變短（或變長） ，使得不穩定性的增長率變大（或變小） ；另一方面，即使不存在界面加速度，界面運動仍然可能導致擾動幅度的增加，柱幾何中擾動幅度的變化速率正比于界面收縮比的平方，球幾何中擾動幅度的變化速率正比于界面收縮比的三次方，並且擾動幅度的變化方式（增加或減少）只與初始時刻擾動幅度的增長速率（正或負）有關，而與界面的運動方向（向內或向外）無關。
  11. ( 2 ) the causation that the caustic phenomena of electromagnetic wave propagation in two - dimension concave reflectors occurs and the types of singularities in caustic fields are investigated, and the conclusion that there are two types of singularities ( fold and cusp ) in caustic fields in two - dimension concave reflectors is obtained ; by symplectic geometrical method, formulations of computing wave fields in and far away from caustic fields in two - dimension concave reflectors are deduced, and the results are plotted in pictures. ( 3 ) the cause of the caustic phenomena of electromagnetic wave propagation in three - dimension concave reflectors and the types of singularities in caustic fields is discussed, and the conclusion that there are three main types of singularities ( fold, cusp and swallowtail ) in caustic fields in three - dimension concave reflectors is obtained ; by symplectic geometrical method, the formulae of computing wave fields in and far away from caustic fields in three - dimension concave reflectors are deduced. particularly, the wave fields in ellipsoid concave reflector are computed, and the results displayed in special sections are given

    論文主要包括三個方面： （ 1 ）分析了凹面反射的焦散現象，給出了不同凹面反射的焦散圖； （ 2 ）分析了二維凹面反射波動場焦散現象產生的原因及焦散區奇性的種類，得出了二維凹面反射波動場焦散區奇性主要有折疊（ fold ）和尖點（ cusp ）兩種的結論，利用辛幾何方法構造了圓錐曲面反射波動場非焦散區和焦散區的通用計算公式，並給出了圓柱面、橢圓柱面及雙曲柱面反射的計算結果； （ 3 ）分析了三維凹面反射波動場焦散現象產生的原因及焦散區奇性的種類，得出了三維凹面反射波動場焦散區奇性主要有折疊（ fom 、尖點kusp和燕尾k ）三種的結論，提出了利用辛幾何方法計算三維凹面反射波動場非焦散區和焦散區的計算方法，並給出了三軸不等橢球體凹面反射波動場的計算結果剖面圖。
  12. The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering

    本文從星載雷達的星地幾何關系入手，舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型，研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法，並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體，完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析，最後完成雷達回波信號的模擬。
  13. Recently a covering method for feed - forward neural network design has been proposed by professor zhang ling. based on the sphere neighborhood model, this method transforms the design of neural classifiers to a geometrical covering problem

    近來張鈴教授提出了一種前饋神經網路設計的覆蓋方法，它以球面領域模型為基礎，使得神經網路的設計轉化為幾何覆蓋問題。
  14. Our main products are the cork esries, such as cork granule, cup pad, cooking set pad, memo board, bottle stoppers, ball core of softball, baseball and badminton, and so on, with are always welcome in the market. our scope of business is ceaselessly extended. at the same time, the other main products, sealing gasket series, which are famous for the rich assortment and good performance in leakproof and accurate size. they are well - assorted accessories which many engine companies of automabile and motorcycle confide in

    本廠生產的軟木紙、軟木粒、茶具墊、餐具墊、留言板、瓶塞、棒球、壘球、羽毛球芯等軟木製品，深受國內外用戶的歡迎，業務不斷發展，同時生產內燃機密封墊片方面的產品，素以機型品種齊全，防漏密封性能好，幾何尺寸精確而知名，深受國內多家大型的汽車、摩托車發動機製造公司的信任，並得以長期配套生產。
  15. 3d points are converted to images based on spherical polar coordinates, and point cloud surface information such as location, normal and color are stored in two - dimensional images

    本文通過球面極坐標將點雲曲面的幾何信息及表面屬性信息映射到二維圖象中去。
  16. We give the algorithm which use spherical template with altitudes and longitudes to correct the image

    我們提出了一種利用球面經緯線模板對圖像進行幾何校正的方法。
  17. In this thesis, a internal and external analyse and research about design, modeling and machining of ball - end cutters is reviewed. on the base of grinding trait of mk6335a five - axis numerical control drill grinder, in the present study, differential geometry, ruled surface concept, envelope and inverse - envelope theory, coodinate transfer and numeric analyse are used to develop a mathmatical model and systematic method for the design, analyse and simulation of ball - end cutters

    本論文在國內外關于球頭立銑刀設計、建模、加工等方面研究的基礎上，根據現有的mk6335a五軸數控鉆尖磨床刃磨運動的特點，應用微分幾何、包絡與反包絡理論、坐標轉換、數值分析等理論知識，研究了基於五軸數控磨床加工球頭立銑刀的數學模型及分析與模擬。
  18. The orbit of venus, for example, is inclined 3. 4 degrees to earth ' s orbit, so even when venus is in the same direction as the sun ( “ in conjunction, ” as astronomers say ), most of the time it is too far above or below the ecliptic to cross the sun ' s face [ see top illustration in box on opposite page ]

    例如金星軌道和地球軌道有3 . 4度的夾角，因此即使金星和太陽在同一個方位（天文學家稱之為合） ，大部份時候金星都遠在黃道的上方或下方，而不是橫過太陽表面（見右頁金星凌日的幾何學） 。
  19. When a cluster of particles is immersed in a uniform electric field, the particles are coupled together due to the mutual interaction among them. this interaction causes the dipole moment of the cluster to be dependent upon the spatial arrangement and relative permittivity of the particles and upon the cluster size. in this work, we attempt to estimate the dipole moment of finite cubic arrays of particles, in terms of that of particle chains which has been known. we assume that a chain may be replaced by a single equivalent sphere with the same dipole moment. with replacing the chain by equivalent sphere, a cluster is simplified to a planar array, and this planar array is simplified to a chain, then the dipole moment is obtained. numerical calculations are performed. it is found that our results are acceptable

    置於均勻電場中的一簇球形顆粒，由於其內部的相互作用而耦合在一起.這致使簇的感應偶極矩與簇的幾何結構，大小以及顆粒的介電常數等參量有關.試圖通過已知的鏈的偶極矩確定任意大小長方結構的簇的偶極矩.假定顆粒鏈可以被具有同樣偶極矩的一個等效介質球代替，並將具有空間結構的顆粒簇處理成面結構簇，再將面結構簡化成一個顆粒鏈，從而確定簇的偶極矩.在這一過程中，通過不斷增加等效球的尺寸，將顆粒間的相互作用包含在簇的偶極矩中.數值分析了立方結構簇的偶極矩，結果是可接受的
  20. Secondly, based on cutting edge geometric model and machining mode of mk6335a grinder, the rake face with constant normal rake angle and flank face with constant orthogonal clearance angle models of ball - end cutters are discussed. the cutting geometry angle parameters are solved and analyzed. moreover, the tool paths models of wheel which grinding are builded and the post - processing technique for coordination transfer is studied

    然後，基於刃口曲線模型、五軸數控磨床刃磨運動方式和微分幾何的直紋面概念，本文推導與建立了具有等法前角的前刀面和具有等主后角的后刀面的球頭立銑刀數學模型，並對球頭立銑刀的刀具角度如刃傾角、主前角、法后角、主偏角等參數進行了求解與分析。
分享友人
分享到 Line

分享到臉書