“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	vapor bubble dynamics vapor cloud vapor compression refrigeration system vapor cycle cooling system vapor decomposition vapor density apparatus vapor deposited metal film vapor deposition vapor-deposition method vapor deposition process to produce powders vapor deposition technique vapor growth vapor growth method vaporization vaporization cooling system of metallurgical furnace vaporization curve vaporizer vapor lamp vapor-liquid-solid mechanism vapor permeation membrane vapor phase diffusion vapor phase epitaxy vapor phase propylene polymerization vapor power cycles vapor pressure

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