Finally, the values of the OAM of the beam light which have transmitted through the cylindrical lens are also calculated and the results are discussed. 利用傍轴近似计算了这两种偏振态光束通过一个柱面透镜后所具有的轨道角动量。
The ice was shimmering black in some places and other places was clear and magnifying as a lens. 有的地方冰面闪烁着黑色的光芒，而在别的地方它清澈晶莹，像一面透镜那样能把景色放大。
