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| 预应力钢筋腱; 钢丝束; 预应力钢筋 | |||
| 钢筋束; 预应力钢丝束; 预应力钢筋束; 钢筋腱 | |||
| steel tendon: 5 phrases in 3 subjects |
| Electronics | 1 |
| Engineering geology | 2 |
| Technology | 2 |
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