While the ITG study looked at the experience of dozens of different users, the Forrester study was a single-company analysis focused on a global retail organization.
2
介绍了一种采用只含有会聚场的单透镜的全静电聚焦和偏转系统，这种系统非常适用于制作小型高性能摄象管。
An all-electrostatic focusing and deflecting system characterized by simple lens system is introduced The new system is very useful in producing compact high-performance camera tubes.
3
本文采用将高斯波束法，射线追迹和矢量衍射积分相结合的方法来分析单波束的点聚焦透镜天线。
We adopted Gaussian beam, ray tracing and vector diffraction integration together to analyze single beam spot-focusing lens antenna.
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