... 螺旋形连续板 spiral continuous slab 单向连续板 way continuous slab 连续肋板 continuous floor ...
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So the high effective pre-stressed reinforced concrete hollow slab with Medium strength spiral-continuous -ribs steel bar has a good prospect.
因此，以中强螺旋肋钢丝为受力筋的预应力空心板具有广阔美好的发展前景。
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