贝塞耳 meaning in English

bessel point

7 . propagation properties of flattened gaussian , bessel - super - gaussian and laguerre - gaussian beams are studied by using the collins formula in the frequency - domain and hankel transform . the results are compared with those by means of the collins formula in the space - domain , and the advantage of the method is discussed
用频域collins公式和hankel变换研究了平顶高斯光束、贝塞耳?超高斯光束以及拉盖尔?高斯光束的传输特性，并与空域collins公式计算结果作了比较，同时讨论了该方法的优点。
As two new models , high - order bessel - gaussian beams and hollow gaussian beams are introduced to describe hollow beams . the results for high order bessel - gaussian beams and hollow gaussian beams propagating through a free space and a focusing lens system are derived respectively in terms of collins " integral formula . the experimental results are illustrated
首次提出了对不同空心光束的描述方法，即“高阶贝塞耳-高斯光束”和“空心高斯光束” ，分别对上述两种空心光束的传输特性和聚焦特性进行了详细的理论分析和实验研究。