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- periodic field beam focusing 周期期场电子束聚焦
- Key words: Electron optics,Wide electron beam focusing,Curvilinear coordinate system,Concentric spherical system,Numerical computation,Aberration. 关键词:电子光学，宽电子束聚焦，曲线坐标系，同心球系统，数值计算，像差
- The optimal parameters of laser window can be given based on thermal and photoelastic effects according to center intensity of far field beam to minimize the influence on beam quality. 考虑热和弹光效应，依据远场光斑中心峰值的大小，得到较佳的窗口参数，减小附加相移对光束质量的影响。
- electron beam focusing system model 电子束聚焦系统模型
- Although all flowers blooms together in the female periodical field, it has some fatal flaws. 但是,在女性期刊业界百花齐放的同时,它存在着一些致命缺陷。
- condition of electron beam focusing 聚束条件
- Influence of phased array element size on beam focusing behavior 平面相控阵的尺寸对声波聚焦效果的影响
- Experiment of the Thermal Blooming in the Beam Focusing Range 光束焦深区热晕效应实验研究
- periodic field focusing 周期场聚焦
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- Zhou Liwei, Electron Optics with Wide Beam Focusing, Photoelectronic Imaging 周立伟:宽束电子光学,光电子成像
- He had to decide within a given period. 他得在一定时间内作出决定。
- She has a detailed knowledge of this period. 她对这段时期的情况了解地相当详细。
- In that period auto sales hit a14-year low. 这时期汽车销售量达到14年来最低水平。
- In this period, unemployment reaches record levels. 这段时间的失业人数又达到了创纪录水平。
- Which period of history are you studying? 你正在学哪一段历史？
- Can you tell me the time period when it was stolen? 能不能告诉我大概什么时候被偷的？
