poriferous

Leather is by ossein type piece the material of poriferous fiber shape that poriferous matrix makes record.

皮革是由骨胶原类片状基质构成纤维状物质。

Profile is poriferous cavity, advocate the liner steel that there is Lengza armor plate to be made inside antrum, in order to increases the strength of window of model steel door.

材为空，内有冷扎钢板制成内衬钢，用以提高塑钢门窗强度。