1) near-and far-field properties
近、远场特性
2) far-field characteristics
远场特性
1.
By using a beam model with linear non-uniform field profile in the x direction,the effect of beam non-uniformity and nonlinear thermal blooming in the optical beam control system on the far-field characteristics of high-power laser beams is studied.
采用场振幅沿x方向呈线性变化的非均匀光束模型 ,研究了非均匀场分布和内光路非线性热效应对远场特性的影响。
2.
The far-field characteristics of laser out put must be understood during designing the optical element and optical coupling.
在设计光学系统的光学元件及进行光学耦合时需要了解激光器的远场特性。
3) near sound field distribution
近场特性
1.
By discussing the near sound field distribution,it shows that there is a critical pole between the near field and the far field,and the variation of the critical pole is influ.
讨论了辐射声场的近场特性,表明近场和远场之间存在临界点,临界点随环宽变化而变化,环宽越大,临界点离环中心越远;反之,临界点离环中心越近。
4) far field focusing characteristics
远场聚焦特性
1.
In order to improve high energy laser beam quality,with the combination of theory and experiment,the far field focusing characteristics of different serrate type apertures were studied and compared with those of circular apertures.
为了提高高能激光系统光束质量,采用理论和实验相结合方法,对圆孔光阑和齿形切趾光阑的远场聚焦特性进行了理论分析和实验验证,并与圆孔光阑的远场衍射作了比较。
5) far-field optical characteristics
远场光学特性
6) far-field approximation
远场近似
1.
Model of atmospheric backscatter on wind measurements using far-field approximation method;
基于远场近似法建立的大气风场测量散射模型
补充资料：近远
1.指亲近或疏远的人。 2.近处和远处。 3.谓远近的程度。 4.偏义复词。谓远。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条