束散 meaning in English
beam spreading
Examples
- The paper discusses , on energy density of laser beam , emanative angle of laser beam and malajustmentdegree of laser beam s axes , the feasibility on adding irradiation of a certain laser irradiator
从激光束的能量密度、瞄准光轴与激光束光轴的失调度、激光束的束散角三个方面论述某型激光照射器增程照射的可行性。 - Under our task experimental condition , we calculated the sensitivity of our planning to develop dial system with direct detection , besides , we studied the relationship between the sensitivity of measurement and atmospheric refractive - index structure constant and applied matlab program simulated the system parameters such as beam diameter , laser divergence angle , detection distance and gained relevant relationship curves
在课题实验条件下，模拟计算了直接检测dial系统的测量灵敏度。在考虑大气折射率结构常数对系统测量灵敏度影响的基础上，并对各种系统参数如光束半径、束散角和探测距离对测量灵敏度的影响运用matlab程序做了仿真计算，为合理选择系统设计参数提供了依据。 - Due to great advantage of the excimer laser in photoelectron material , photoelectron technology research , so in this thesis , a xecl excimer laser is designed in order to solve some problem in semiconductor film , cmr film , quartz film and other kind of film application , optical etching field , interaction between laser and material , material plasma study . the parameters of the excimer laser is e also measured and analyzed
因此本文以气相沉积、外延生长、巨磁薄膜、金刚石及其它薄膜制备及后续的光刻，激光与物质的相互作用，等离子体研究为目的，研制获得了激光脉宽18ns ，单脉冲能量150mj ，矩形光斑大小2cm 1cm ，束散角3mrad ，最高重复频率5hz的xecl准分子激光器。 - 1550nm is chosen as the work wavelength , cassegrain transmitting - receiving antenna as the optical antenna of the system through the elucidation of how to choose the work wavelength and optical antenna of comm - unication system . the structure and theoretical design parameter of apt sub - system have been presented through the discussion of the optical signal power estimation of apt sub - system , beam divergence angle , pointing error , and error signal extraction . compared with existed optical wireless communication system , the design scheme proves applicable
通过对通信系统工作波长选择、光学天线选择等阐述，选择了1550nm作为系统工作波长、卡塞格伦（ cassegrain ）收发合一天线作为系统光学天线；通过对apt子系统功率测算、束散角和瞄准误差、误差提取信号等的讨论，给出了apt子系统结构和理论设计指标，并将其与现有的光无线通信系统进行比较，说明该设计方案是可行的。