对原材料和预张拉方法进行改进。
作者从以下几个方面对钢丝绳结构伸长和预张拉理论进行了研究。
The author makes the research on the steel wire rope structural stretch theory and pre-pull theory from the following aspects.
在试验结果基础上，对预张拉碳纤维布加固混凝土梁的使用性能进行了总结。
Based on the results of experiments, the serviceability of reinforced concrete beams strengthened by pre-tensioned carbon fiber composite plastic sheets was summarized.
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