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单词
actinic focus
释义
actinic focus
actinic focus
[
‚ak′tin·ik ′fō·kəs
]
(optics)
The point in an optical system at which the chemically most effective rays (usually those in the ultraviolet) converge. Also known as chemical focus.
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更新时间:2026/4/17 21:03:39