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扩孔器与钻头直径之差
meaning in English
shell clearance
Related Words
扩
钻头
扩孔钻头
扩眼钻头
胃扩
扩底
扩程
扩映射
扩压
辗扩
扩孔器导向杆
扩孔器牙轮伸展臂
扩孔试验
扩孔手铰刀
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