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| 预应力钢筋将热轧钢筋在常温下用卷扬机或其他张拉设备强力拉伸至超过其屈服点而进人强化阶段,迫使钢筋内部晶体组织发生改变，从而使钢筋屈服强度得到提高 | |||
| 预应力钢筋 | |||
| 预应力钢筋 | |||
| prestressed reinforcement: 8 phrases in 2 subjects |
| Bridge construction | 3 |
| Technology | 5 |
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