对原材料和预张拉方法进行改进。
对使用中的建筑张拉膜结构的预张力的检测属于无损检测范畴。
The measurement of the at-working tensioned membrane structure's pretension belongs to the nondestructive monitoring category.
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.
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