“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	School of the Art Institute of Chicago School of Theater,Film and Television of Communication University of China School of Tomorrow school of Wang Yangming school of warm diseases school of Yellow Emperor and Master Lao School of Yi Zhi Chan Pushing Tuina School of Zang Fu Tuina school organizational culture school organization management school party committee school physical education school planning school popularity school protection of minor school regulations school rules and regulations school-run enterprises school-running idea of the university school running structure of higher education school-running system school safety school safety management School Sanitary Regulations school scientific research administration

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。