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| 钢筋截面面积 | |||
| 钢筋断面面积 | |||
| 钢筋面积; 钢材面积 | |||
| area of steel: 9 phrases in 4 subjects |
| Bridge construction | 3 |
| Metallurgy | 3 |
| Steel production | 1 |
| Technology | 2 |
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