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- This is a long focus lens. 这是个长焦距镜头。
- The long focus lens made by our factory is taken as an example, the ideasand methods of designing anti-reflection coating with colour reducibility, as wellas its result. 本文以我厂生产的长焦距镜头为例,介绍了满足彩色还原特性的长焦距镜头增速膜的设计思想,设计方法和结果。
- The long focus lens made by our factory is taken as an example, the ideasand methods of designing anti-reflection coating with colour reducibility, as wellas its result. are shown. 本文以我厂生产的长焦距镜头为例,介绍了满足彩色还原特性的长焦距镜头增速膜的设计思想,设计方法和结果。
- Lunar optical astronomical telescope consists of five parts: long focus telescope, detector, bracket of telescope, control system and appendant equipment. 月基光学天文望远镜由长焦距望远镜、探测器、望远镜支架、控制系统和附属设备五部分组成。
- Measurement for the Long Focus Length of Lens by Images of Moire Fringes 利用莫尔条纹的计算机图象测量长焦距透镜焦距
- coil used to focus magnetic fields 聚焦线圈
- Objective To design a system of conductivity tomography using focused magnetic fields for data acquisition. 目的设计磁聚焦电导率成像系统硬件,实现数据采集。
- The basic microscope consists of an electron source and an assembly of magnetic lenses arranged in a vertical column that is evacuated to about 10 torr or better. 基本的显微镜包括一个电子源和一块以垂直的柱形排列的磁性透镜集成板，板上排列的间隔为10托或更好。
- The effects of the multiple coulomb scattering and chromatic aberrations in the magnetic lenses on the spatial resolution are studied. 研究了多库仑散射和磁透镜系统的色散对质子照相空间分辨率的影响及解决途径。
- After long focusing economic resources on coastal areas, China last year decided to accelerate development in its land-locked western lands in 2000. 经过很长时期的集中发展沿海地区经济战略,中国去年作出决定,2000年将加速发展西部内陆地区。
- In this paper the methods and results of computation about the operating specifications, focussing magnetic field and electron gun design are described. 本文描述了工作特性、聚焦磁场及电子枪设计的计算方法和结果。
- In this dissertation, the effects of input power, electron beam voltage, electron beam current and focusing magnetic field on output power have been studied. 本论文还分析了输入功率、电子注直流电压，电子注直流电流和聚焦磁场对输出功率的影响。
- There was a long lag in forwarding mail to us. 转寄给我们的邮件晚了很久才拿到。
- You can keep my book as long as you like. 我的书你要借多久都随你的便。
- Fruit juices ferment if they are kept a long time. 果汁若是放置很久，就会发酵。
- The beggar spun a long yarn about his misfortunes. 那个乞丐编造了一大篇自己如何遭遇不幸的故事。
- Magnet Lens and Power Supply in Radioactive Ion Beam Line in Lanzhou 兰州放射性核束流线的磁铁与电源
- How long will our food supplies hold out? 我们的储粮还能维持多久?
- Thus the optimum values of the focusing magnetic field, electron beam and helical slow wave system can be obtained.The theory presented here can provide a strong basis for design of the helix TWT. 优化设计聚焦磁场、电子注和螺旋线慢波系统的参量可以对螺旋线行波管的稳定性分析提供必要的依据。
- It was a long trudge up the hill. 那段上山的路很难走。
