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粗 土粒 : 40 phrases in 10 subjects |
| Architecture | 2 |
| Bridge construction | 4 |
| Desert science | 3 |
| Drilling | 1 |
| Electronics | 1 |
| Engineering geology | 2 |
| General | 1 |
| Rail transport | 3 |
| Soil science | 3 |
| Technology | 20 |
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