beam divergence angle.
光束发散角
far field divergence half angle
远场发散半角
an angle is formed by the divergence of straight lines.
一个角是由直线交叉组成。
An angle is formed by the divergence of two straight lines.
两条直线相交形成一个角。
Simple Method of Measuring the Divergence Angle of Laser Beam
激光束发散角精确测量的简便方法
A single collimating lens has been designed to reduce the angle of divergence.
采用单透镜准直系统进行发散角的压缩。
Calculation of Local Divergence Angle of Diffusers and Correction of Boundary Layer.
扩压器型面局部张角的计算及附面层修正
The divergent lens only enlarges angle of horizontal divergence and not angle of vertical divergence.
发散透镜只增加水平发散角而不增加垂直发散角。
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