pretensioned prestressed concrete girder的意思|示意
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预张预应力混凝土主梁
pretensioned prestressed concrete girder的网络常见释义
先张法预应力梁 ... 预应力混凝土桥 prestressed concrete bridge 先张法预应力梁 pretensioned prestressed concrete girder 后张法预应力梁 post-tensioned prestressed concrete girder ...