Assertion: carbon's structure | /r/HasProperty | specified of the type
Facets:
Source sentences:
text: Instead of the type (n,m), the structure of a carbon nanotube can be specified by giving the length of the vector w (that is, the circumference of the nanotube), and the angle α between the directions of u and w, which may range from 0 (inclusive) to 60 degrees clockwise (exclusive).