 |
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| 爆炸后的炮眼; 残眼; 未穿透孔 | |||
| 闷孔 | |||
| 死洞〔坑〕; 爆炸后的炮眼; 闭口孔型 | |||
| 死洞; 盲孔未穿通孔洞; 陷阱; 爆后炮眼 | |||
| 闭口空轧孔型; 【压】 空轧孔型 | |||
| 未爆炸炮眼 | |||
| 盲孔; 盲井; 炸后残眼; 爆炸后的残眼; 不通孔; 死孔; 炮窝子 | |||
| |||
| 爆破后的残孔 | |||
| dead hole: 3 phrases in 2 subjects |
| Drilling | 1 |
| Oil / petroleum | 2 |
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