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- 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.
- Period permanent magnet focus system 周期永磁聚束系统
- 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。
- He was too shortsighted to focus on the object. 他由于近视过深而无法把视力焦点对准在该物体上。
- Dalian is a magnet for tourists. 大连是吸引游客的地方。
- He always wants to be the focus of attention. 他总想成为注意力的焦点。
- You should focus your attention on your work. 你应该把注意力放到工作上。
- The focus on my camera isn't working properly. 我的照相机上的调焦装置有毛病。
- Aberration of Magnetic Focus and Electrostatic Deflection Camera Tubes 磁聚焦静电偏转型摄象管的象差
- 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。
- In tonight's programme our focus is on Germany. 在今天晚上的节目中我们重点介绍德国。
- For me, your explanation is a bit out of focus. 对我来说，你的解释还不太清楚。
- A defect of focus, such as blurring in an image. 像差焦点不准确而造成的物像模糊
- A magnet attracts both iron and steel. 磁铁吸铁也吸钢。
- Her beauty makes her the focus of attention. 她长得漂亮，很惹人注目。
- Certain metals are attracted to a magnet. 某些金属会受磁石的吸引。
- Please focus your minds on the following problem. 请集中考虑以下问题。
- 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
