“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	nitrogen oxide monitoring in ambient air nitrogen oxides nitrogen oxides decomposition catalyst nitrogen oxides pollution nitrogen oxides sensors nitrogen pentoxide nitrogen-phosphorus coupling nitrogen phosphorus detector nitrogen-phosphorus detector nitrogen phosphorus detector (NPD) nitrogen-phosphorus detector (NPD) nitrogen replacement nitrogen rule nitrogen saturation nitrogen seal nitrogen sequence nitrogen source nitrogen star nitrogen tetroxide nitrogen trichloride nitrogen trioxide nitrogen use efficiency nitrogen-vacancy center nitrogen ylide nitroglycerin

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