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| 61. | ferroconcrete box-beam of one engineering in early stage, and puts forward control& prevention measures from |
| 分析了某工程标段预应力钢筋混凝土小箱梁预制初期产生断裂的原因,从原材料、度应力、工工艺及养护方面介绍了控制预防措施,以保证工程质量。 |
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| 62. | at the same time, it has been found that the correlation changes when magnetizing direction deviates from |
| 但同时也发现随着磁化方向与应力方向的偏离，或是随着磁化强度的变化，这种相关性会发生变化，在特定条件下甚至出现相反变化趋势。 |
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