查询词典 beam-focusing

In this research, the micro optical pick-up head is composed of a micro optical bench and a focusing lens mounted on a two-axis actuator. The study of focusing lenses is the major topic in this thesis.

在本研究中，微光学读取头是由微光学平台及固定在双轴致动器的聚焦透镜所组成的，其中的聚焦透镜正是本论文研究的主要方向。

It is explained that focusing effects for the compound system was better than lens′ and the compound system focusing approach appropriate to crystal properties was discussed.

解释了该聚焦方法比单一薄透镜效果明显好的原因，并指出了这种聚焦方法的使用对象。

Then the experimental setup for the focusing performance is described, and the focusing performance of the PMMA compound high-energy X-ray lens is tested under the inradiation of the 8 keV monochromatic X-ray.

最后给出8 keV单色X射线辐射下，PMMA材料X射线组合透镜的聚焦性能的测试结果，对实际测试结果进行了分析和讨论，得出结论，焦距等参量与理论计算结果基本吻合。

In recent years, there have been many researches focusing on orbital angular momentum of light beam in the field of optics.

近年来，在光学领域内，关于光束轨道角动量的研究，受到广泛的关注。

Based on thin annular electron beam approximation, the focusing effect of plasma is investigated.

比较了在不同气压和空心阴极孔径下虚阳极的形成时间和扩展速度。

The laser cutting head for tipping paper comprises a laser, a laser beam expanding system and a cylindrical surface focusing mirror.

水松纸激光切割头由激光器、激光扩束系统、柱面聚焦镜组成。

In a this tube pair of deflection plate, besides demonstration electron under electric field role deflection movement, but also played causes the beam convergence the function, if causes two deflection plates the electric potentials to be lower than the acceleration extremely electric potential approximately 30 volts, then the focusing condition is best.

该管内的一对偏转板，除了演示电子在电场作用下的偏转运动外，还起了使电子束会聚的作用，如使两偏转板的电位低于加速极电势约30伏，则聚焦状态最佳。

For PPM, the magnetic field distribution and the ripple rule of electron beam in periodic focusing magnetic field is studied.

分析了阴极电子初始热速度对电子注成形和电子注质量的影响以及栅控电子枪的设计问题。

The computer separately connects and controls the I/O end and A/D converter; the I/O end connects and controls the X, Y axis driving circuit and the semiconductor laser; the X, Y axis step-by-step driving circuit connects and controls the X, Y step-by-step electrical machines to control the dimensional platform; the beam of the semiconductor laser passes through the focusing drawtube with 0.1mm diameter to form the facula with the diameter less than 0.1mm; the facula irradiates on the detector surface of the XY dimensional displacement platform to produce the corresponding electric signals; the detector surface connects the A/D converter through the amplifier; the electrical signal is amplified and is converted into the data signal by the A/D converter and is sent to the computer for processing.

由计算机分别连接并控制I/O端口和A/D转换器，I/O端口分别连接并控制X、Y轴步进电机驱动电路和半导体激光器，X、Y轴步进电机驱动电路分别连接并控制X、Y轴步进电机，从而控制二维位移平台，半导体激光器的光束经过设有直径0.1mm小孔的聚焦镜筒形成＜0.1mm直径的光斑，光斑照射于设在XY二维位移平台上的探测器表面使其产生响应的电信号，探测器表面经放大器连接A/D转换器，电信号经放大器放大后，由A/D转换器转换为数据信号送计算机处理。

Boundary Element Method is applied to simulate electron optics system of multi-beam klystron with PRPM focusing in this paper.

摘要该文采用边界元软件TAU对具有周期反转永磁聚焦结构的多注速调管电子光学系统进行研究。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。