在绿叶婆娑的俄勒冈州立大学校园的西边，穿过那些带学术味的红砖建筑，在一片巨大的砖石场地上，建有一座高大的T形钢棚。
At the west end of the leafy Oregon State University campus, past the scholarly red-brick buildings, is a massive T-shaped steel shed in a giant paved lot.
建筑师Daniel Patzold说，“市场棚亭使用了大量的碳钢构件，它们和不锈钢不一样，它们很容易生锈，所以必须有保护措施。”
"Market booths use a lot of mild steel sections, and mild steel tends to rust, unlike stainless steel, so it needs protection," says architect Daniel Patzold.
管棚复合钢支撑技术，是一个通过超前管棚、支撑钢拱、白铁皮隔离、工作面封堵的相互配合和共同作用，形成了具有强大支护抗力的复合支护体系。
Pipe lodgepole-steel tunnel support technique is a strong composite support system consisting of advance pipe lodgepole, support stell vault, tin plate packer and working surface plug-back.
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