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| 切透; 刻穿; 录音盘刻纹过深 | |||
| 贯通掘井井巷掘进中,采用一个或两个工作面按预定方向与预定井巷和硐室接通的作业 | |||
| 刻纹过深; 刻纹过度 | |||
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cutting through : 3 phrases in 2 subjects |
| General | 1 |
| Technology | 2 |
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