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凹球面镜
meaning in English
concave spherical mirror
Related Words
球面镜
窝凹
成凹
凹坡
凹出
凹缝
凹光栅
凹创
凹切
凹域
凹切花齿
凹球面反射镜
凹球面铝阴极
凹曲
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