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凹光圆盘
meaning in English
concave disk
Related Words
圆盘皇女
凹
椭圆凹
地槽凹
凹痕打凹
窝凹
成凹
球凹
凹坡
凹损
凹沟滚轮
凹拐角
凹光栅
凹规划问题
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