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| junior unit | |||
| subunit | |||
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小单元 : 23 phrases in 10 subjects |
| Agriculture | 1 |
| Aviation | 1 |
| Communications | 2 |
| Desert science | 1 |
| Electronics | 8 |
| Exhibitions | 1 |
| General | 1 |
| Rail transport | 1 |
| Space | 1 |
| Technology | 6 |
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