1) elongated focusing electrode

加长聚焦电极
2) Focusing electrode

聚焦电极
3) Cylindrical electrode focusing

圆筒电极聚焦
4) SFL tool

球形聚焦电极系
5) Dynamic focusing electrode

动态聚焦电极
6) focus electrode potentia

聚焦电极电位;聚焦电极电位
补充资料:冲击波聚焦效应