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| 段数电雷管的段数因生产厂家和雷管系列而不同。毫秒电雷管的段别,可用雷管脚线颜色和标牌区分,但是不同的制造厂家，所采用的颜色也不同。我国毫秒电雷管的最高段数为30段，通常25ms 等间隔的为20段 | |||
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number of delays : 4 phrases in 1 subject |
| Explosives and Explosive Ordnance Disposal | 4 |
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