“periodic permanent magnetic focusing”的概念、定义、翻译、参考文献-科学参考

单词	periodic permanent magnetic focusing
释义	periodic permanent magnetic focusing Encyclopedia 工学电子注聚焦释 periodic permanent magnetic focusing周期永磁聚焦采用沿电子注行进方向周期变化的磁场实现电子注聚焦的磁聚焦方式。简称PPM聚焦。
随便看	absolutely continuous function absolutely continuous function in the restricted sense absolutely continuous function in the wide sense absolutely continuous mapping absolutely continuous measure absolutely continuous spectrum absolutely convergence absolutely convergent absolutely convergent integral absolutely convergent series absolutely convex absolutely convex hull absolutely convex set absolutely convex subset absolutely discontinuous function absolutely divergent absolutely equicontinuous basis absolutely equivalent method absolutely existential sentence absolutely extreme form absolutely fair absolutely fair sequence absolutely flat absolutely flat morphism absolutely flat ring

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