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| 不溶解 | |||
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non -solution : 35 phrases in 10 subjects |
| Agriculture | 1 |
| Automobiles | 1 |
| Aviation | 4 |
| Bridge construction | 1 |
| Earth sciences | 1 |
| Electronics | 1 |
| Metallurgy | 4 |
| Oil / petroleum | 1 |
| Programming | 2 |
| Technology | 19 |
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