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| 系统计算 | |||
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system calculation : 23 phrases in 11 subjects |
| Agriculture | 1 |
| Aviation | 2 |
| Bridge construction | 1 |
| Business | 8 |
| Communications | 2 |
| Electronics | 4 |
| Finances | 1 |
| Hydroelectric power stations | 1 |
| Nautical | 1 |
| Shipbuilding | 1 |
| Technology | 1 |
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