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单词
actinic ray
释义
WordReference Random House Unabridged Dictionary of American English © 2024
actin
′
ic ray
′
,
[
Physics.
]
Physics
a ray of light of short wavelengths, as ultraviolet or violet, that produces photochemical effects.
1835–45
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更新时间:2025/7/31 0:48:26