span pole 中文意思是什麼
span pole
解釋
拉線電桿-
As the preheater tower span of large scale nsp cement plant is great and the internal stress of single beam and pole is also great, steel structure and reinforced beam / pole be used widely because of their special performance
摘要近十年來,由於大規模水泥廠窯尾塔架跨度大,單根樑柱的內力大,鋼結構樑柱和鋼管混凝土柱因其特有的性能優勢得到了廣泛的應用。
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