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单词
diffraction grating
释义
WordReference Random House Unabridged Dictionary of American English © 2024
diffrac
′
tion grat′ing,
[
Physics.
]
Physics
a band of equidistant, parallel lines, usually more than 5000 per inch (2000 per centimeter), ruled on a glass or polished metal surface for diffracting light to produce optical spectra. Also called
grating.
1865–70
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更新时间:2025/7/23 10:06:49