propagation axis 中文意思是什麼

propagation axis 解釋
傳播軸
  • propagation : 持續培養
  • axis : n （ pl axes ）1 軸，軸線。2 【植物；植物學】莖軸。3 【解剖學】第二頸椎，第二脊骨。4 【政治學】軸...
  1. The most achievement is that we firstly obtain the analytic accurate solution of the modal fields of the waveguide structure and find some available character : ( 1 ) the different uniaxial crystal materials have the different propagation properties ; ( 2 ) when the optical axis of the crystal is on the plane that is made up of the normal direction of the waveguide plane and the propagation, there are te mode and tm mode in this special waveguide, but the principal mode is different of the character of the uniaxial crystal, the principal mode is the principal mode of te mode for the negative uniaxial crystal, but the one of tm mode for the positive uniaxial crystal ; ( 3 ) when the crystal optical - axis parallel to the waveguide plane, for the positive uniaxial crystal material, the principal mode of the waveguide is a te wave, which can be excited by the light at any frequency ; when the light frequency satisfies a single mode propagation condition, there will be only the principal mode propagating in the waveguide, otherwise some of the higher order modes can be excited, which are neither te modes, nor tm modes, but the hybrid guided modes

    本文就是在此背景下，利用金屬波導和單軸晶體的一些特性，結合麥克斯韋方程組和波導的邊界條件，從三種不同的情況研究了光在對稱平面單軸晶體金屬波導（波導層是單軸晶體，兩個波導界面均為金屬）內的傳輸特性，其主要貢獻為，首次解析地得到了這種波導結構下模式場的精確解，並發現了一些有用的特性： （ 1 ）模式場的性質因單軸晶體的性質不同而異； （ 2 ）當單軸晶體光軸位於波導界面法方向與傳輸方向構成的平面內時，波導中傳輸te波和tm波，只不過其主模因單軸晶體的性質不同而異，當波導層介質為負單軸晶體時，波導主模是te波主模，而波導層介質為正單軸晶體時波導主模是tm波主模。 （ 3 ）當單軸晶體光軸位於波導面內時，對于正單軸晶體，波導的主模是橫電波te _ 0模，任何頻率的光波均可激勵該模式；當光波波長滿足一定條件時，波導內傳輸單模，否則，將激勵起高階模式，高階模即匪te波，也匪tm波，而是兩者耦合而成的混合模。
  2. Based on the above theory and methods, the main works of this thesis are lasted as follows : starting from the propagation law of partial coherent light and beam coherence - polarization ( bcp ) matrix approach, the properties of pgsm beams through both an axis - symmetric paraxial optical abcd system and an axis - unsymmetric one are studied. the analytical propagation equations of pgsm beams are derived, which enable us to study the propagation - induced polarization changes and irradiance distributions of pgsm beams through an axis - symmetric paraxial optical abcd system and an axis - unsymmetric one

    在此基礎上，本文進行的主要工作有：基於空間-時間域中互強度的傳輸理論和bcp矩陣處理方法，首次研究了pgsm光束通過對稱和非對稱abcd光學系統和光闌的傳輸變換特性，推導出了pgsm光束傳輸表達式，可以對pgsm光束偏振和光強的傳輸變化進行分析。
  3. In this, we focus on the phenomena of the induced focusing when two beams propagation in self - defocusing nonlinear media in an off - axis geometry

    本論文旨在研究三維自散焦介質中由交叉相位調制效應誘導的光束聚焦。
  4. Chapter 4 : applying the definitions of the generalized second and fourth order moments, the beam propagation m2 - factor and the kurtosis parameter of coherent and incoherent combinations of two - dimensional off - axis elegant hermite - gaussian ( ehg ) beams are derived analytically and numerically. and the power in bucket ( pib ) is also presented numerically. our results illustrate the propagation properties of the beam through a first - order optical abcd system

    第四章：討論了相干和非相干離軸完美厄密高斯（ eleganthermitegaussian （ ehg ） ）光束組的傳輸特性，通過解析推導和數值模擬，研究了相干和非相干的離軸ehg光束組的傳輸，得出並比較了相干和非相干的離軸ehg光束組的光束質量因子、陡峭度和筒內的功率（ powerinbucket ） 。
  5. Based on matlab system, a multi - layer back propagation neural network model was developed, in which the effects of the depth from surface to the tunnel axis, tunnel diameter, groundwater level, as well as the elastic modulus, shear strength, side pressure coefficient and unit weight of soil and the space between excavated wall and lining on the ground subsidence were considered

    採用matlab系統開發了一個多層反向傳播神經網路模型，考慮了隧道的深度、隧道的直徑、地下水位、土的彈性模量、土的剪切強度、土的側壓系數、土的重度和開挖間隙對地表沉降的影響。
  6. The wave propagation along axis direction in piezoelectric hollow cylinder is studied

    對壓電圓柱殼體內波的軸向傳播進行了研究。
  7. Solving wave propagation along axis direction in piezoelectric hollow cylinder by integral average method

    用積分平均方法求解壓電圓柱殼內波的軸向傳播
  8. In addition, the center of the gravity of the radiation field and the symmetry are discussed along with the propagation axis

    證明了hchg光束在傳輸過程中的重心和對稱性都會得到保持。
分享友人
分享到 Line

分享到臉書