The government says undersized gusset plates were the critical factor in Minneapolis' I -35 West Bridge collapse.

官方宣称不够大的固定板是导致明尼阿波利斯I -35西桥断裂的主要因素。

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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.

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。

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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.

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。

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