steel bridge welding structure
steel bridge welding structure 钢桥焊接结构 收藏 steel anched bridge 钢桁架拱桥 收藏 .
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steel bridge welding structure
钢桥焊接结构
以上为机器翻译结果,长、整句建议使用 人工翻译 。
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At present, there is not special technological criterion or specification in China for manufacturing and welding steel structure of railway bridge girder erecting machine.
目前,国内在铁路架桥机钢结构的制造及焊接工艺方面,还没有专门的规范或规程。
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