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| 延时电雷管装有延时元件或延期药，以电能激发后间隔一定时间爆炸的电雷管。按延时间隔时间不同，分为秒延时电雷管、半秒延时电雷管、1/4秒延时电雷管、毫秒延时电雷管。〈不可译为:迟发电雷管, 段发电雷管〉 | |||
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delay-electric detonator : 15 phrases in 3 subjects |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 6 |
| Technology | 8 |
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