gratings的中文意思、音标与词形变化

n. 格栅, 栅栏, 格子( grating的复数形式 )

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