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unalloyed section steel for construction
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unalloyed section steel for construction
Encyclopedia
工学
非合金钢
释
unalloyed section steel for construction
建筑用非合金型钢
碳含量小于2.11%(除含碳外,一般还含有少量的硅、锰、硫、磷),用于建筑工程的具有一定截面形状和尺寸的非合金条型钢材。
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Chapters and Sentences of Mengzi
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Chaqu Verses from the Collection of the Administration of Performances for the Qing Imperial Court
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