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。

youdao

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。

youdao