Assertion: honeycomb's porosity | /r/CapableOf | exceed 70%
Facets:
Source sentences:
text: When the porosity exceeds 70%, the strength of the honeycomb structure is lowered, and thus, the honeycomb structure may break when stored in a can body.
text: When the porosity exceeds 70%, the strength may decrease or the thermal conductivity may decrease.
text: When the cell walls have porosity exceeding 70%, they have insufficient strength and low PM-capturing performance.