Assertion: ceramic | /r/HasAspect | a crystalline structure
Facets:
value: unlike glass
type: OTHER
Source sentences:
text: However, glasses and ceramics differ in that ceramics have a crystalline structure while glasses contain impurities that prevent crystallization .
text: Unlike glass, ceramics may have crystalline or partly crystalline structures.
text: Most ceramics have a highly crystalline structure, in which a three-dimensional unit, called a unit cell, is repeated throughout the material.