 |
| |||
| 台阶底部水平炮孔; 蛇穴炮孔 | |||
| 爆破孔; 蛇穴形孔; 蛇炮眼; 底部钻孔; 底部炮眼; 蛇穴式炮眼; 蛇穴式炮孔 | |||
|
snake hole : 5 phrases in 2 subjects |
| Explosives and Explosive Ordnance Disposal | 3 |
| Technology | 2 |
|
| |||
| 台阶底部水平炮孔; 蛇穴炮孔 | |||
| 爆破孔; 蛇穴形孔; 蛇炮眼; 底部钻孔; 底部炮眼; 蛇穴式炮眼; 蛇穴式炮孔 | |||
|
snake hole : 5 phrases in 2 subjects |
| Explosives and Explosive Ordnance Disposal | 3 |
| Technology | 2 |