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| 自然休止角 | |||
| angle of natural repose: 13 phrases in 7 subjects |
| Animal husbandry | 2 |
| Bridge construction | 2 |
| Construction | 1 |
| Desert science | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geology | 1 |
| Technology | 5 |
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