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单词 θ76678
释义
the world > matter > physics > electromagnetic radiation > light > [noun] > regulator, modifier (3)
screena1764

A flat vertical panel of fabric, paper, wood, etc., typically used in scientific experiments to intercept light, heat, or other radiation; a…

light valve1922

an electrical device which regulates the amount of light passing through it.

reticle1944

A pattern of opaque and transparent sections for selectively allowing light or other radiation to pass; spec. one in the shape of a disc, rotated in…

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更新时间:2024/11/10 23:16:55