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单词
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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ispms
ispmsrs
ispn
ispne
ispng
ispno
ispnw
ispo
ispoc
ispocd
ispog
ispo information system
i spoke out of turn.
(i) spoke too soon
i spoke too soon.
ispol
ispoms
ispon
ispor
i 'spose
i spose
i 'spose so
i spose so
ispot
ispp
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更新时间:2026/2/5 19:18:26