轴光束 meaning in English

axial bundle

Chapter 2 : using a so - called variance matrix , we studied the propagation and the focusing characteristics of the paraxial light beams . the quantities characterizing the gross features for a paraxial optical beam , such as the beam width , the divergence , the curvature radius of the wavefront , the complex beam parameter q . and the beam quality factor , are related by using variance matrix
第二章：阐述了常数折射率介质中光束的传输和聚焦，建立了表征傍轴光束总的特征的量，如：束宽、衍射发散角、波前曲率半径、复光束参数q与变换矩阵的关系，得到了光束质量因子和变换矩阵行列式的定量关系。
In chapter 2 , a schrodinger formulation for paraxial light beam propagation of the real and comprehensive refractive indexes is represented . the equation for the atom laser beam wave - function is also given by a schrodinger equation , which is similar to the equation of the time - dependent system . therefore , it is possible to investigate the propagation of an atom laser beam
第二章：本章介绍了傍轴光束在实数折射率介质和复数折射率介质中传输的schrdinger形式理论，同时指出由于原子激光的传输满足schrdinger方程，与含时量子系统的传输方程类似，故利用含时量子系统的schrdinger形式理论来研究原子激光的传输是可行的。