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| arrowhead tack; arrow head | |||
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三 角 结 : 26 phrases in 10 subjects |
| Agriculture | 2 |
| Aviation | 1 |
| Desert science | 1 |
| Electronics | 4 |
| Mathematics | 1 |
| Metallurgy | 2 |
| Reproductive biology | 1 |
| Surgery | 2 |
| Technology | 7 |
| Textile industry | 5 |
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