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| 延发地雷管; 电动延期雷爆管; 电气延期雷爆管 | |||
| 迟发电雷管; 延发电雷管; 缓性电气雷管; 缓发电雷管; 延期电雷管; 延期电雷管迟发电雷管延发电雷管; 电动延期雷管; 电气延期雷管; 缓发电气雷管 | |||
| электродетонатор замедленного действия: 1 phrase in 1 subject |
| Oil and gas technology | 1 |
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