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凹焊缝
meaning in English
concave weld
Related Words
直线焊缝焊接
窝凹
成凹
凹坡
凹出
凹缝
凹光栅
凹创
凹切
凹域
凹辊环
凹函数
凹焊缝 凹面焊 凹形焊缝 轻型焊
凹号
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