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| |||
| 铅砖 (用于原子反应堆) | |||
| 导向滑车〔轮〕; 铅柱用来测定炸药爆炸力 | |||
| 导向滑轮 | |||
| 导向滑车 | |||
| 导块 | |||
| 铅柱; 铅块; 水砣滑车 | |||
| lead block: 10 phrases in 4 subjects |
| Drilling | 2 |
| Explosives and Explosive Ordnance Disposal | 4 |
| Space | 1 |
| Technology | 3 |
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