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boring pattern

archit. 钻孔排列; 钻孔图
expl. 炮孔排列方式; 炮孔布置
tech. 钻孔样板; 钻孔图 (式); 钻孔排列形式; 钻孔布置形式; 炮眼组布置和放炮程序图; 炮眼排列

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