Assertion: cross section | /r/HasProperty | denoted by a σ or σ t
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: The cross section obtained in this way is called the total cross section and is usually denoted by a σ or σ T .
text: The cross section obtained in this way is called the total cross section and is usually denoted by a σ or σ T .