ductibility

Refer to the ductibility and light-weight which improved the construction more safe reliability.

钢结构延性好，自重轻、大大提高了住宅安全可靠性。

But geosytheic of ductibility is large, the rough edge effect to a non-cutting and drilling operations.

但分解延展性较大，感化到毛边裁切和打孔。