输入要查询的单词:
beam divergence
查词链接:
https://www.dute.org/dict/beam_divergence
复制链接 光束发散度:光束或电磁束随着离开发射点的距离增加,束直径或半径增加的程度。
查看英英释义
abstract:
The beam divergence of an electromagnetic beam is an angular measure of the increase in beam diameter or radius with distance from the optical aperture or antenna aperture from which the electromagnetic beam emerges. The term is relevant only in the "far field", away from any focus of the beam.
网络释义
射束发散
... 束发结 snood 射束发散 beam divergence 用发网束发 snood ...
光束发散度
... beam divergence 电子束发散 beam divergence 光束发散度 beam divergence 射束发散性 ...
电子束发散
... beam definition电子束清晰度 beam divergence电子束发散 beam of uniform strength等强度梁 ...
常用短语
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