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- The electron gun for a large screen color picture tube generally employs quadrupole lens, so that the landing spot with positive astigmatism can cancel the negative astigmatism from the deflection magnetic field in certain sense. 大屏幕彩色显像管电子枪通常采用非轴对称四极透镜 ,其目的是形成一定正像散的着屏光点以抵消偏转磁场产生的负像散。
- One of the plural electrostatic quadrupole lenses nearest to the cathodes is configured so as to produce a lens action weaker on two side electron beams than on the center electron beam. 多个静电四极透镜中最接近阴极的静电四极透镜构形为能使透镜对两个侧边电子束的透镜作用比对中心电子束的透镜作用弱。
- Plural axially spaced electrostatic quadrupole lenses are formed between facing ones of the first and second groups of focus electrodes. 第一和第二组聚焦电极的面对的电极之间形成多个轴向隔开的静电四极透镜。
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- 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。
- magnetic quadrupole lens 磁四极透镜
- The camera lens must be screened from direct sunlight. 照相机的镜头不可受到阳光的直射。
- quadrupole lens 四极透镜
- electric quadrupole lens 四极电透镜
- 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。
- quadrupole lens triplet 四极三合透镜
- electrostatic quadrupole lens [电子]静电四极透镜
- slot quadrupole lens 缝隙式四极透镜
- 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。
