With the increase of the need to long span and big room, the application of point-supported grid frame gets more abroad.
随着社会对大跨度大空间的需要，点支承网架的应用越来越广泛。
With the increase of the need to long span and big room, the application of point-supported grid frame gets more abroad.
随着社会对大跨度大空间的需要，点支承网架的应用越来越广泛。
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