The author makes the research on the steel wire rope structural stretch theory and pre-pull theory from the following aspects.
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.
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。
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