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凹砂轮
meaning in English
cup-type grinding wheel
Related Words
氮化硅砂轮
窝凹
成凹
凹坡
凹出
凹缝
凹光栅
凹创
凹切
凹域
凹入式炮塔
凹入线脚
凹十字螺丝钉
凹蚀
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