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| 正钢筋 | |||
| 正强化 | |||
| 积极强化 | |||
| 受拉钢筋; 正弯矩钢筋; 正挠钢筋; 受持钢筋 | |||
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positive reinforcement : 3 phrases in 1 subject |
| Bridge construction | 3 |
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