wave arch
波形拱
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拱形波纹钢屋盖 metal corrugated arch roof ; Arched Corrugated Steel Roof
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在三山西大桥拱肋缺陷检测中，通过声时波形参数计算拱肋缺陷的大小，并进行了钻孔验证。
In Sanshan West Bridge arch's defect detection, we calculate the defect's dimension through analysis the wave time and wave shape parameters, and then verify the results by boring a hole.
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