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| 无粘结预应力筋; 先张拉预应力筋 | |||
| 无黏结预应力钢丝束; 无黏结钢筋丝 (束); 不黏着力筋 | |||
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unbonded tendon : 1 phrase in 1 subject |
| Hydroelectric power stations | 1 |
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