矢形面 的英文怎麼說
中文拼音 [shǐxíngmiàn]
矢形面
英文
sagittal plane-
Based on the three new supposition and the tow new mechanical tools : moment vector and radius vector, the warping theory introduced the analytical method of the rotation of a cross section around a fixed axis, so as to make the space stability of the thin - walled member complanate and one - dimensioned
翹曲理論以三條新的假定和新建立的彎矩矢量和轉角向徑兩大力學工具為基礎，提出了繞定軸轉動的分析方法，使薄壁構件的空間變形平面化、一維化。Analyse the tooth geometry of klingelnberg cyclo - palloid spiral bevel gear., according to the relative position and kinematic relation of the cutter heads, virtual crown gear and the processed wheel blank, established the system of coordinates of the gear cutting, dedcuced the tooth face equation of the virtual crown gear, according to relations of the gear cutting and space theory of engagement, deduced the tooth face equation of klingelnberg cyclo - palloid spiral bevel gear, and drawing the three - dimensional graphs of the virutal crown gear and klingelnberg cyclo - palloid spiral bevel gear according to the design and setting parameters
對克林貝格擺線齒錐齒輪進行齒面幾何分析。根據銑齒加工中刀盤、搖臺和輪坯的相對位置和相對運動關系建立了切齒嚙合坐標系，由矢量的旋轉推導了產形輪齒面方程;根據空間嚙合原理和切齒嚙合關系推導了被加工齒輪的齒面方程;由設計參數和銑齒調整參數計算得到齒面離散數據，繪制了產形輪和擺線齒錐齒輪的三維齒形。Part ii the author discusses the influences that china ' s wto entry will bring to picc yancheng branch through the analysis of domestic and foreign economic enviroment and chances and challenges that pice yancheng branch will face the aurhor concludes that the situation is critical after china ' s wto entry. the author also predicts the prospects of picc yancheng branch
第二章入世對鹽城人保的影響，重點論述了入世對鹽城人保的影響，文章試圖從入世后鹽城人保所處的國際國內經濟環境、面臨的機遇和挑戰等方面系統論述入世后鹽城人保形勢緊迫的觀點，同時對入世后鹽城人保的發展趨勢進行了預測，以期有的放矢。Polarimetric synthetic aperture radar ( polsar ) investigates the transverse vectorial nature of plane em waves and provides the complex scattering matrix of a scatterer. scattering polarimetry is sensitive to the shape, orientation, and dielectric properties of scatters
極化合成孔徑雷達（ polsar ）研究電磁波的矢量特徵，通過測量和分析目標的極化散射特性，獲取目標的介電常數、物理特性、幾何形狀和取向等方面的大量信息。In this section, we also designed 2d subwavelength multilevel ( 2 -, 4 -, 8 -, etc. level ) columned stairstep grating with coned spatial profile to reduce reflection
我們也通過矢量衍射理論分析了多臺階二維亞波長具有圓錐面形的網格光柵的電磁場衍射特性。The paper presents several aspects in partition rectification and visualization of raster image. adopt technology of visualization for scientific calculation, vector diagram of deformation 、 contour chart of deformation and drawing of three - dimensional are realized. delaunay tin in view of deformation feature is constructed on base of selected grid control points and methods and mathematical models for partition rectification are realized based on the delaunay tin. software of geometric rectification for large scales are realized and applied in project
本論文針對柵格影像的變形可視化及分塊糾正展開研究，取得了以下幾方面的研究成果：一、採用科學計算可視化技術，繪制變形矢量圖、變形等值線圖和三維效果圖，實現了柵格影像變形特徵的可視化；二、提出了在格網控制點（ gcp ）數據基礎上選擇性構造顧及變形特徵的delaunay三角網，並基於構造的三角網實現了分塊糾正的方法和數學模型；三、採用vc編制了影像幾何糾正軟體，實現大比例尺掃描地形圖的糾正，並在工程中得到應用。This should be an incentive to apply the rrpa method with non - linear effective lagrangians to study other systems such as unstable nuclei near drip lines. for nuclei with the extreme value of n / z, low - lying collective excitations are found in isovector dipole modes, which are mainly due to the particle - hole excitation of weakly bound states near fermi surface and the isospin mixture effect
將相對論無規位相近似理論推廣應用到奇特核集體激發態的研究，發現對于奇特核的同位旋矢量激發模式在很低能量下會出現軟模式的巨偶極共振，這主要是由於費米面附近粒子-空穴激發所形成的。The software ansys6. 0 is used to analysis the stability of the state after construction of tongwamen bridge, linear method is used in analyzing the finite element model of the bridge, the coeffient of stability of different state after construction is given. on the basis, the effect of different factors such as the arrangement of lateral brace, the sloping angle of arch ribs, the stiffness of bridge deck system, the effect of non - orientedly conservative loadings of the hanger and tie bar etc is discussed. the different coefficients of stability of changing these factors are given, so the factors that are vital to the lateral stability of x - type arches are found, and the rationality of the methods taken to enhance the lateral stability of tongwamen bridge is evaluated
本文應用有限元分析商業軟體ansys6 . 0 ，採用線彈性方法，通過對該橋的空間有限元模型進行穩定性分析，得出其成橋運營階段各種工況下的穩定安全系數。在此基礎上，本文還通過有限元模型分析，就拱的矢跨比、吊桿（立柱）的非保向力效應、橋面系的剛度、橫撐布置形式、拱肋側傾角等因素對該橋整體穩定性的影響展開探討與研究。文中給出了各因素變化情況下的穩定安全系數，指出了對鋼管混凝土提籃拱橫向穩定性有顯著影響的因素及其合理變化范圍，並對銅瓦門大橋提高橫向穩定性的措施的經濟合理性進行了分析。The essay deeply analyzes the elementary theory of the developing teacher - assess system and points out its intrinsic essence and basic principle, goes into the base in theory which consists of 5 respects and finally makes the comparison between the developing teacher assess and present - day teacher assess. the developing teacher assess system, with the purpose of the promotion, is a kind of formative evaluation which is based on the aim, stresses the process and the timely feedback. it does not consider the result of the assess as the base of prize or reproach. its direction is to face the future, its aim is to promote the all - round development of all staffs, its function is centered on the lead - in, inspiration, development, and its means is the formative teacher evaluation. it pays special attention to the desire of teachers and esteem the requirement of teachers as its motive and power of the assessment. however, the present teacher assess is the closed - ending one whose feature is mainly to stress the daily performance before the evaluation and accordingly judge whether they possess the conditions of being rewarded or reproached
其方向? ?面對未來，目的? ?促進全體教師的發展，功能? ?導向、激勵、發展為主，方式? ?形成性的教師評價制度，在啟動方式上注重教師自己的成就期望，把教師的需要當作評價的動機和力量。而現行的教師評價是終結性評價，其特點主要是面向過去，特別注重教師在評價前的工作表現，並根據教師的工作表現，判斷他們是否已經具備獎勵或處罰的條件。為了全面了解現行教師評價制度存在的問題，做到有的放矢，本研究對濟南市156名高中教師進行了調查，通過分析反映出以下問題： 1 、大多數教師對教師評價認識不清，引不起全體教師的共鳴，容易走過場。The relativistic random phase approximation ( rrpa ) is a relativistic extension of the random phase approximation for studying microscopically nuclear dynamical excitations and giant resonances. the consistency of rrpa calculations requires two aspects : first, it demands that the relativistic mean - field wave " function of nucleus and the particle - hole residual interactions in the rrpa are calculated in a same effective lagrangian. second, the consistent treatment of rrpa within rmf approximation requires the configurations including not only the pairs formed from the occupied fermi states and unoccupied stat es but also the pairs formed from the dirac states and occupied fermi states
自洽的相對論無規位相近似理論的自洽性要求有兩方面的內容：第一，描述原子核的激發態性質和基態性質時必須從同一個有效的拉矢量出發；第二，相對論無規位相近似計算，不但要考慮正能的粒子-空穴組態的貢獻，而且還要考慮從fermi海核子態到dirac海負能核子態形成的對激發的貢獻。Through the analyzes of electromagnetic system of a axial symmetry by the method of electromagnetic vector potential, an eddy current field math model is build by triangle cell, this article has researched the effect of power frequency to eddy current density, penetration depth and the skin effect
本文以電磁場矢量位有限元法為基礎對二維軸對稱場的磁場強度、渦流密度進行了計算求解，採用三角形單元和六面體單元建立了渦流場數學模型，研究了電源頻率對渦流密度、透入深度及集膚效應等場量的作用影響。The association between sagittal measurements and the etiology of thoracolumbar cure formation is less clear ; howeer, regional anterior oergrowth in the lumbar spine may also be responsible for the deformity
胸腰彎形成的病因和矢狀面測量的關系不很明確，然而節段性腰椎前側的過度生長也可能對畸形的形成負有責任。In this paper, micro - cavity semiconductor laser ( mcsl ) with pillar vertical - cavity surface - emitting structure ( vcsel ) which has potential applications in optical communication and optical interconnect is theoretically analyzed, the calculation model that used to discuss the modal performance of rectangular columnar and cylinder vcsel with oxidized aperture is established by using vector field model. the numerical simulations in the case of cylinder structure show oscillating wavelength and threshold gain against inside and outside radius of laser, the layer refractive index and pair number of bragg mirror, thickness, position and oxidized material ' s refractive index of oxidized aperture, in detail. more practically, considering dos shell of laser as non - perfect one, or supposing that dos shell is separated from the laser, we can obtain more significative results
本工作以矢量場模型出發，對具有誘人應用前景的柱形垂直腔面發射結構（ vcsel ）的微腔半導體激光器（ mcsl ）進行了理論分析，建立了用於分析方柱形和圓柱形結構具有氧化孔徑層的激光器的模式特性的理論模型；對圓柱形結構情況進行了數值模擬，得到了振蕩波長、閾值增益隨激光器內外半徑、 bragg反射鏡層折射率、周期數以及氧化孔徑層厚度、位置和氧化物折射率的詳細變化規律；為使理論計算更接近實際，將外加金屬包殼視為非理想導體，或將金屬包殼與激光器結構隔開，分別對這兩種情況下的結果進行了討論。Numerical simulations were done to show the distortion of the wavefront and the interference pattern under several kinds of typical plasma density distributions. the ray path in plasma was calculated by the numerical solution of the vector equation of light ray, when the plasma density was closing to the critical electron density of the laser frequency. through the simulations, the factors that influence the measurement were found out under different density distributions and shapes of plasma
在此基礎上，採用數值模擬的方法，計算了在幾種典型的等離子體密度分佈下，激光波面的變化和產生的干涉圖樣；並用光線矢量微分方程的數值解法計算了當等離子體密度接近光頻臨界電子密度時，光線在等離子體中的傳播路徑，從中掌握了在不同的等離子體密度和形狀下，進行干涉測量所應估計到的因素。This sagittal section of brain demonstrates a large brainstem glioma. most gliomas are astrocytomas
腦干矢狀面顯示一個較大的腦干膠質瘤。大多數膠質瘤是星形細胞瘤。In order to study the influence of some changes in patellar position and configuration on knee extensor mechanism in sagittal plane after total knee arthroplasty, a two - dimensional model of knee joint in sagittal plane based on crossed - four - bar linkage tibiofemoral joint model is developed, which includes patellofemoral joint model in addition
摘要為研究全膝關節置換術后髕骨部分形位參數的變化對伸膝機構性能的影響，建立了以交叉四連桿股脛關節模型為基礎的、包含髕股關節模型的矢狀面膝關節模型。Abstract : in order to solve the double parameters enveloped in the geartooth flank generating, the complicated double parameter envelope is simplified to the generating process between work - piece and imaginary crown generating gear by means of mathematical transformation. the equation of the imaginary crown generating surface and the partial derivatives are deduced, so the differential geometric parameters of the generating surface can be obtained. by analyzing the generating motion between the imaginary crown generating gear and the work - piece, all the first to third order geometric parameters of the generated tooth flank at any given point can be calculated
文摘:為了解決直接求解展成法加工中存在的復雜雙參數包絡問題時的困難，提出通過數學變換，將此包絡問題轉化為假想平面產形輪與工件之間的展成問題來進行研究.推導了假想產形面的方程和各階偏導矢，於是可獲得產形面的微分幾何參數.通過分析假想平面產形輪與工件之間的展成運動，即可得到被展成齒面上任意指定點的全部一至三階微分幾何參數The moment method is used to calculate the rcs of three - dimensional targets in this paper. these targets include conducting targets, dielectric targets and coat targets. triangular patches are used to model the surface of the target, then electric field integral equation ( efie ) and magnetic field integral equation ( mfie ) are built which satisfy the boundary conditions. the rwg vector base functions are used to denote equivalent electric current and magnetic current on the surface of the target. finally use the galerkin method ( rwg vector base functions are basis function and test function ) to transform integral equations into matrix equation. when obtain the equivalent electric current and magnetic current, we can calculate the scattering field and the rcs of the target
本文利用矩量法計算了三維導體目標、介質目標、塗層目標的雷達散射截面。首先採用三角形面元對物體表面幾何形狀進行模擬，然後建立滿足邊界條件的電場積分方程（ efie ）和磁場積分方程（ mfie ） ，將物體表面的等效電磁流用rwg矢量基函數表示，最後利用伽略金法（ rwg矢量基函數既作為基函數又作為檢驗函數）將電磁場積分方程轉化為矩陣方程求解未知電磁流系數，得到了表面的等效電磁流后，可以計算散射場和目標的雷達散射截面。Two cases are analyzedxonducting target with coat and dielectric target with coat. for the conducting target with coat, triangular patches are used to model the surfaces of the coat and the conducting object. now there have equivalent electric current and magnetic current on the surface of the coat, but only has equivalent electric current on the surface of the conducting object. the rwg vector base functions are used to denote equivalent electric currents and magnetic current. three integral equations should be built to obtain the unknown current coefficients ; for the dielectric object with coat, triangular patches are used to model the surfaces of the coat and the dielectric object. now there have equivalent electric current and magnetic current not only on the surface of the coat but also on the surface of the dielectric object. this time four integral equations should be built to obtain the unknown current coefficients
對于塗層導體目標，將塗層外表面和導體外表面進行三角形面元剖分，在塗層外表面有等效電磁流，導體外表面僅有等效電流（無等效磁流） 。將這些等效電磁流用rwg矢量基函數表示，需建立三個積分方程來求解未知的電磁流系數；對于塗層介質目標，將塗層外表面和內層介質外表面進行三角形面元剖分，在塗層外表面有等效電磁流，內層介質外表面也有等效電磁流，這時需建立四個積分方程來求解未知的電磁流系數。Abstract : the tolerance and generation of the stair - error in rp were studied. by using the normal vector information of the tringon facets in stl file, a calaculating method of stair - error was proposed and a slice - adapt algorithm which will save the time of mold manufacturing was presented
文摘:研究了快速成型過程中階梯誤差的產生與度量，並利用stl文件中的三角形面片的法矢量信息給出了階梯誤差的計算方法，提出了可變分層厚度的演算法，採用自適應分層來減少成型時間的方案分享友人