poriferous

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

革是由骨胶原类片状多孔基质构成的多孔纤维状物质。

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.

材为多孔空腔，主腔内有冷扎板制成的内衬，用以提高窗的强度。