erection material 中文意思是什麼
erection material
解釋
安裝材料-
It has solved two difficult of application and erection of high strength material in arch bridge. the cfst arch bridge has being developed quickly in our country
鋼管混凝土結構在橋樑上的應用,同時解決了拱橋高強度材料應用和施工兩大難題,因此,鋼管混凝土拱橋在我國得到迅速的發展。
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