Normality, whose structural features are natural, real, traditional, standard and style prevailing, is the base.
“正常形式”具有自然真实、传统规范和流行图式的结构性特征，这是一个基础平台。
Standard Specifications for Welding of Structural Steel Highway Bridge …
公路工程钢结构施工规范。
Standard Specifications for Welding of Structural Steel Highway Bridge …
公路工程钢结构施工规范。
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