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| 21. | We shall start the two blocks from rest at the center point of the track and force them apart by exploding the cap with an electric spark. |
| 开始时，将两个滑块静止置放在槽的中心，然后利用电火花引爆雷管，迫使它们分开。 |
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| 22. | percussion gun |
| 雷管枪 |
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| 23. | millisecond detonator |
| 毫秒雷管 |
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| 24. | instantaneous detonator |
| 即发电雷管 |
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| 25. | gasless detonator |
| 无烟雷管 |
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| 26. | safety detonator |
| 安全雷管 |
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| 27. | primer (gilding) brass |
| 雷管黄铜 |
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| 28. | Okay,there's no match on any of the czech military components. |
| 雷管材料和所有 捷克制雷管都不相吻合 |
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| 29. | combined detonator |
| 复合雷管 |
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| 30. | no-lag seismograph cap |
| 无时延雷管 |
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