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- By assuming the weak lens focal length expression to be the first term in a power series, a simple and accurate formula can be derived for the objective focal length of a magnetic electron lens. 用假设弱透镜焦距表达式是一个幂级数中的第一项的方法,可以导出相当准确且便于实用的电磁电子透镜物镜焦距公式。
- iron-free magnetic electron spectrometer 无铁电子磁谱仪
- Nonlinear Evolution of the Magnetic Electron Drift Waves 磁电子漂移波的非线性演化
- Dalian is a magnet for tourists. 大连是吸引游客的地方。
- Numerical calculation of asymmetrical magnetic electron objective lens 非对称磁透镜物镜的数字计算
- 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。
- Shanghai Magnet Electronic Converter Co., Ltd 上海迈格尼电子变压器有限公司
- A magnet attracts both iron and steel. 磁铁吸铁也吸钢。
- The transmitter was pulsed by an electron tube. 电子管使发射器产生脉冲波。
- Certain metals are attracted to a magnet. 某些金属会受磁石的吸引。
- It shows the presence of a magnetic field. 这表明有磁场存在。
- North magnetic poles repel (each other). 磁北极与磁北极互相排斥。
- Having the same magnetic inclination or dip. 等磁倾的有相同的磁倾斜的
- An electron tube having a cathode and an anode. 电子二极管有一个阳极和一个阴极的电子管
- The block becomes magnetic when the current is switched on. 通电时线圈即具磁性。
- 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。
- The loop becomes magnetic when the current is switched on. 通电时线圈就会有磁性。
- The number of electron pairs an atom can share with other atoms. 共用电子对数，共价一个原子与其他原子共用的电子的对数
- An electron with a negative charge, as contrasted with a positron. 电子带有负电荷，与正电荷相反的电子
