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黏土砂 : 122 phrases in 10 subjects |
| Bridge construction | 6 |
| Desert science | 6 |
| Earth sciences | 1 |
| Electronics | 2 |
| Engineering geology | 6 |
| General | 6 |
| Hydroelectric power stations | 14 |
| Metallurgy | 2 |
| Oil / petroleum | 3 |
| Technology | 76 |
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