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| 预应力钢筋 | |||
| 预应力形钢; 预变形钢; 预应力钢材; 预应力用高强钢材 | |||
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| 预应力钢材 | |||
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prestressing steel : 15 phrases in 4 subjects |
| Bridge construction | 4 |
| Electronics | 1 |
| Metallurgy | 1 |
| Technology | 9 |
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