1) focal region
聚焦区
2) refocusing section
再聚焦区
1.
The magnetic field of refocusing section can laminarize the spent beam, with different magnetic field presenting different improvement.
再聚焦区的磁场可以提高电子注的层流性,磁场不同则它对电子注层流性的改善作用不同。
4) zone of sharp focus
锐聚焦区
5) Focus area
聚焦区域
6) Focus Region Selection
聚焦区域选择
补充资料:冲击波聚焦效应