The beam scans a circular area in the form of a sector which sweeps around and around . 这波束周而复始地呈扇形扫视一个园形区域。
The flashlight ' s beam scanned every corner of the room 手电筒的光束扫遍屋内各个角落
Acoustical holography by electron - beam scanning 电子束扫描声全息
Ebs electron beam scanning system 电子束扫描系统
Beam scanning and wind field measurement of direct - detection doppler lidar 激光多脉冲探测的计算机模拟与实验研究
The interlayer fusion metallurgy technology based on electron beam scanning control 基于电子束扫描控制的中间层熔炼技术
This paper regards narrow fan - beam scan mode as multi - detector parallel beam scan mode 本论文将窄角扇束扫描看成是多探头的平行束扫描。
In this paper , the author attempts to discuss two main problems of convolution back projection algorithm basing on fan - beam scanning 本文主要探讨了卷积反投影算法的两个核心问题：卷积窗函数与内插函数。
Its image reconstruction belongs to the image reconstruction under narrow fan - beam scan mode . after comparing different algorithms , this paper introduces convolution back projection algorithm for the parallel image reconstruction 采用高能直线加速器作为射线源的高能x射线工业ct机多采用窄角扇束扫描方式，其图像重建属窄角扇束扫描方式下的图像重建。
The serpentine feed is the core of a frequency scanning antenna feed system , which produce proper amplitude and phase distribution for the antenna arrays . most of all , it make the beam scanning over a large angle range by means of changing operating frequency 它为天线阵提供要求的幅度、相位分布，更为重要的是当频率发生少许变化时使线源的等相位面产生显著的倾斜，完成波束在空间扫描。
