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| 炮孔数根据设计在爆破体中钻凿的炮孔数目。是爆破设计的主要内容之一。炮孔数和最小抵抗线、孔距、孔深等参数有关 | |||
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number of holes : 18 phrases in 5 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Aviation | 1 |
| Electric machinery | 1 |
| Technology | 14 |
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