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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 display device that uses a cathode ray tube. 一种使用阴极射线管的显示装置。
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- ON THE ABERRATION THEORY FOR WIDE AND NARROW ELECTRON BEAMS IN A COMBINED ELECTROMAGNETIC FOCUSING SPHERICAL CATHODE LENS SYSTEM 宽束和细束电磁复合聚焦球面阴极透镜的象差理论
- Some adjustment of the lens may be necessary. 可能有必要调节一下镜头。
- Do you have soft contact lens care product? 有没有软性隐型眼镜保养用品？
- He uses lens to make things appear clearer. 他用镜片以便看东西更清楚些。
- The lens is often used to make telescopes. 镜片常被用来做成望远镜。
- Don't smear the lens; I've just polished it. 别把镜头弄脏了，我刚刚擦过。
- 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 camera lens must be screened from direct sunlight. 照相机的镜头不可受到阳光的直射。
- electrostatic cathode lens 静电阴极透镜
- A close- up lens is ideal for taking close- up picture. 近摄镜用来拍特写照片最理想。
- In this operation the surgeons implant a new lens (in the eye). 医生在这次手术中给病人(眼球)植入了新的水晶体。
- German physicist. He won a1905 Nobel Prize for his work on cathode rays. 勒纳，菲利普1862－1947德国物理学家。因在阴极射线方面的成果而荣获1905年诺贝尔奖
- ON ABERRATION THEORY OF THE COMBINED ELECTROMAGNETIC FOCUSSING CATHODE LENSES 关于电磁复合聚焦阴极透镜的象差理论
- cathode lens 阴极透镜,第一电子透镜
- Color cathode ray tube shielded band. 彩色显像管用带钢。
- The gunsight has an infrared lens for night vision. 射击瞄准器装有用于夜间视力的红外线镜头。
- Just as a double convex lens enlarges, so a double concave lens reduces. 正象双凸透镜可以放大那样，双凹透镜也可以缩小。
