cáo gāng
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  • n.channel steel; U-bar; U-steel; beam channel

    • jī chǔ cáo gāng de shuǐ píng dù yīng mǎn zú shè jì yāo qiú

      基础槽钢水平度满足设计要求

      The levelness of the foundation channel steel should accord with the design.