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| 边孔隧道或平巷炮孔组的侧边孔，它决定着硐口的宽度。参见 side hole；flank hole；end hole | |||
| 修边炮眼; 整边炮眼; 边孔 (隧洞的、巷道的); 边炮眼 | |||
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