英语词汇“echelon grating”是什么意思，“echelon grating”的读音、用法及例句翻译-烛光网

词汇	echelon grating
释义	echelon gratingn.（名词） A diffraction grating made of parallel glass plates, each of which extends slightly beyond the next, used to examine extremely fine structures.梯状光栅：用来检查极小结构的衍射光栅，由平行的玻璃片组成，每块玻璃片都比邻近一块长出一点
随便看	colleagued colleagues colleaguing collect collect collectable collectable collectanea collected collected collectible collectible collectibles collecting collection collections collective collective bargaining collective farm collective mark collective memory collective noun collectives collective unconscious collectivise

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