prestresed steel bar drawing jack的意思|示意
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预应力钢筋拉拔千斤顶
prestresed steel bar drawing jack的网络常见释义
张拉预应力钢筋千斤顶 ... prestressed concrete bridge 预应力混凝土桥 prestresed steel bar drawing jack 张拉预应力钢筋千斤顶 pretensioning method 先张法 ...