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合叶片 : 23 phrases in 13 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Animal husbandry | 1 |
| Aviation | 2 |
| Chemistry | 1 |
| Electricity | 1 |
| Electronics | 1 |
| Metallurgy | 1 |
| Mining | 2 |
| Oil / petroleum | 1 |
| Plastics | 1 |
| Technology | 7 |
| Wind Energy | 3 |
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