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凹反射光栅
meaning in English
concave reflection grating
Related Words
偏心光栅
凹
椭圆凹
地槽凹
凹痕打凹
窝凹
成凹
球凹
凹坡
凹损
凹耳机
凹耳蛙
凹缝
凹浮雕
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