The article describes the fabrication methods and quality control factors on Heavy Box-Type Steel Headframe.

本文介绍了大型箱型钢结构井架的制作方法及质量控制要素。

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The article describes the fabrication methods and quality control factors on Heavy Box-Type Steel Headframe.

本文介绍了大型箱型钢结构井架的制作方法及质量控制要素。

youdao