Assertion: honeycomb's porosity | /r/CapableOf | make the surface of cell wall
Facets:
Source sentences:
text: In the present invention, while a porosity of less than 30% tends to make the surface of cell wall 2 smooth, it is preferred that the average surface roughness (Ra c ) of cell wall and/or the (RzDIN c ) are controlled at 0.5 μm≦Ra c ≦10