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| 工艺结构 | |||
| 技术结构; 技术阶层; 技术结构阶层 | |||
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technology structure : 19 phrases in 7 subjects |
| Aviation | 6 |
| Business | 1 |
| Electronics | 5 |
| General | 1 |
| Securities | 1 |
| Space | 4 |
| Technology | 1 |
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