gratings
/ɡ'reɪtɪŋz/
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释义
- n格栅, 栅栏, 格子( grating的复数形式 )
英文释义
n. a barrier that has parallel or crossed bars blocking a passage but admitting air
n. a frame of iron bars to hold a fire
n. optical device consisting of a surface with many parallel grooves in it; disperses a beam of light (or other electromagnetic radiation) into its wavelengths to produce its spectrum
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