例句與造句

1. 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：闡述了常數(shù)折射率介質(zhì)中光束的傳輸和聚焦，建立了表征傍軸光束總的特征的量，如：束寬、衍射發(fā)散角、波前曲率半徑、復光束參數(shù)q與變換矩陣的關系，得到了光束質(zhì)量因子和變換矩陣行列式的定量關系。
2. It's difficult to find complex beam parameter in a sentence. 用complex beam parameter造句挺難的