橢性圓束 的英文怎麼說
中文拼音 [tuǒxìngyuánshù]
橢性圓束
英文
elliptic pencil of circle-
The main results and academic contributions of the dissertation can be summarized as following : 1 ) for the difficulty to obtain the accurate analytical solution of the stress constraints around 3d cracks, detailed 3d fe analyses have been conducted to study the out - of - plane constraint factor tz around a straight through - thickness crack, a quarter - elliptical corner crack and a semi - elliptical crack embedded in an isotropic elastic plate subjected to uniform remote tension loading. the distributions of tz are minutely studied in the forward section of the cracks. strong 3d zones ( tz > 0 ) along the crack front were investigated despite the far field stress - free boundary conditions
全文主要研究內容和學術貢獻如下: 1 .針對一般三維裂紋端部場應力約束準確解析的困難，對均勻拉伸載荷作用下各向同性彈性板中穿透厚度中心直裂紋、半橢圓表面裂紋和1 / 4橢圓角裂紋進行了大量詳細的全場應力三維有限元分析，首次全面分析了非穿透裂紋端部場三維影響區范圍，給出了不同形狀三維裂紋前沿離面應力約束因子tz的數值解，並結合k場平面解給出了非穿透裂紋端部應力場k - tz雙參數描述。Polarization characteristics of laser beam, which is one of the important characteristics of high power laser, have a direct effect on output power, damage threshold of optical elements and beam quality etc. the polarization characteristics in the high power coil resonator is analyzed by jones calculus, and draw a conclusion that, in general the eigen - polarization state is elliptical polarization
激光光束的偏振特性是高功率激光器的一個重要特性之一，直接影響著高功率激光器的輸出功率、腔內光學元件的損傷以及光束質量等。本文首先利用瓊斯矩陣演算法對高功率氧碘激光器腔內的偏振特性進行了分析，並得出結論，諧振腔內的本徵振蕩一般為橢圓偏振。Numerical simulation of the characteristics of flow resistance in the flow around elliptic tubes
流體繞流橢圓管束流阻特性的數值模擬This paper analyzes the non - symmetry of elliptic polarization oftwo linear polarized beams, which are perpendicular to each other, caused by their reflecting from a metal mirror. also, it studies the non - linear error created by polarization and how the errors change. the study is very important for improving the measuring accuracy of polarized heterodyne interferometer
主要分析兩束相互垂直的線偏振光經過金屬反射鏡反射后引起的橢圓偏振化的不對稱性，並研究由此產生的非線性誤差的變化規律，這對提高偏振光外差干涉儀的測量精度是極為重要的。Abstract : this paper analyzes the non - symmetry of elliptic polarization oftwo linear polarized beams, which are perpendicular to each other, caused by their reflecting from a metal mirror. also, it studies the non - linear error created by polarization and how the errors change. the study is very important for improving the measuring accuracy of polarized heterodyne interferometer
文摘:主要分析兩束相互垂直的線偏振光經過金屬反射鏡反射后引起的橢圓偏振化的不對稱性，並研究由此產生的非線性誤差的變化規律，這對提高偏振光外差干涉儀的測量精度是極為重要的。The chemical composition, micro - structure and optical properties and its application of tio2 thin films deposited on k9 glass by using reactive electron - beam evaporation ( reb ) are studied through sem, tem, xps, xrd, spectroscopic ellipsometry ( se ) and uv - vis spectrophotometer in the dissertation, and the progresses of nucleation and growth of thin film are discussed from the point of view of dynamics and thermodynamics so that a structure model of tio _ ( 2 ) thin film is brought forward
本文採用sem 、 tem 、 xps 、 xrd 、橢圓偏振儀（ se ） 、 uv - vis分光光度計等分析手段系統地研究了電子束反應蒸發方法在k9玻璃上制備tio _ 2薄膜的成分、結構和光學性能以及tio _ 2薄膜在光學多層膜中應用，並開發了膜系設計軟體。文中還從動力學和熱力學角度分析了tio _ 2超薄膜的形核生長過程，得出了tio _ 2薄膜的組織結構模型。Therefore, for 980nm pumping, a significant disadvantage is the low coupling efficiency to the single mode fiber because of the mold field mismatch between the elliptical laser beam and the circularly symmetrical fiber mode and also because of the phase mismatch
但是對于像980nm泵浦激光器發出的激光來說，由於特殊的物理結構，使得激光光束具有高度的橢圓性。對于橢圓度高的激光光束和單模光纖耦合的報道不是很多。According to their shape characteristics, the parameter estimation algorithms of circles and ellipses are proposed based on the corresponding constraint condition
根據圓和橢圓的形狀特性，提出了相應的約束條件及圓和橢圓參數求解演算法。Mode conversion of an optical beam in a nonlinear weakly - guiding elliptic graded - index fiber is investigated. the formulas of mode conversion are given semi - analytically
摘要研究了非線性弱導橢圓梯度折射率光纖中光束的模式變換，給出了模式變換的半解析公式。分享友人