单词：commercial steel
commercial steel的用法和样例：
例句
- The roof is formed from standard steel sections and recyclable pre-cast concrete units.屋顶是形成从标准型钢可回收和预制混凝土组件。
- This paper presents an automatic stowing,packing and gathering system for a section steel tandem rolling line.介绍一种用于精整工艺的自动化型钢码垛包装收集系统。
- There parts are blanked out of strip steel.这些零件是用条钢冲压出来的。
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