单词：gratings
音标：[ɡ'reɪtɪŋz] ；
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
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
gratings的用法和样例：
例句
- Both are polymer replicas of master gratings.两个都是标准光栅的聚合物复制品。
- Conception of new gratings with better efficiency and lower stray light.高效率和低杂散光的新光栅核心理念。
