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beam diameter
释义
Dictionary
See
beam width
beam diameter
beam diameter
[
′bēm dī‚am·əd·ər
]
(optics)
The distance between points on opposite sides of a light beam at which the power per unit area drops to 1/
e
(0.37) times its maximum value.
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更新时间:2025/3/4 9:30:36