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	crown crown canopy Crown College crown colony crown daisy crowned crown gall crown glass crowning crown jewel crown land crown lens crown-of-thorns Crown Point crown prince crown princess crown roast crown rot crowns crown saw crown vetch crows crow's-foot crow's-nest crow's–foot

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