steel wire for umbrella ribs 伞骨钢丝
steel wiredrawn ribs 有肋钢拉带
steel box arch ribs 钢箱拱肋
steel tube arch ribs 钢管拱肋
strip steel with longitudinal ribs 纵凸筋钢板
A big arched roof of steel ribs.
一个钢筋拱肋支撑的拱形大屋顶。
In this paper, the finite element method for U shape yieldable steel ribs is presented.
本文提出采用有限元法对U型钢可缩性支架进行计算。
Steel pole, steel ribs, golden handle, sadin cloth cover, translucent plastic film packing, both for rainy and sunny use.
钢杆，钢骨，双金套手柄，色丁布伞面，透明膜包装，晴雨兼用。
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