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- In this paper, the aberration theory for cathode lenses with combined electrostatic and magnetic focusing is discussed in detail. 本文运用变分原理研究了电磁复合聚焦阴极透镜的象差理论,导出了在任意象平面中象差系数的普遍公式。
- A new high power and wideband amplifier with permanent periodic magnet focusing 一种新的永久周期磁铁聚焦的高功率宽带放大器
- There is dependence between e/m error and accelerating voltage or focus voltage in the measurement of e/m by magnetic focusing method. 在利用磁聚焦法测量电子比荷的实验中;测量误差与示波管的加速电压和聚焦电压存在较大的相关性.
- Magnetism is a natural phenomenon. 磁力是一种自然现象。
- Magnetism is considered as a molecular phenomenon. 电磁被认为是一种分子运动。
- Dalian is a magnet for tourists. 大连是吸引游客的地方。
- periodic permanent magnetic focusing 周期永磁聚焦
- Magnetism produced by electric charge in motion. 电磁性由运动电荷引起的磁性
- He is a man of great personal magnetism. 他是一位富有个性魅力的男子。
- Periodic magnetic focusing system 周期永磁聚焦系统
- Physicists are still interested in magnetism. 物理学家对磁力仍有兴趣。
- magnetic focusing indicator tube 磁聚焦指示管
- This disco is a magnet for young people. 这家迪斯科舞厅经常吸引大批年轻的顾客。
- A magnet attracts both iron and steel. 磁铁吸铁也吸钢。
- Certain metals are attracted to a magnet. 某些金属会受磁石的吸引。
- A defect of vision prevented him from focusing accurately. 视力上的缺陷使他不能准确对焦。
- Period permanent magnet focus system 周期永磁聚束系统
- Human beings have learned out how to make magnet of cast iron. 人类已经学会如何从生铁制出磁铁。
- Forbidden City is a great magnet for foreign tourists. 紫禁城对外国旅游者来说是个有巨大吸引力的地方。
- We are currently focusing seriously on this matter. 我们正在严肃地处理这个问题。
