Assertion: airfoil's airflow | /r/HasProperty | mach
Facets:
value: at some point on a body
type: TEMPORAL
Source sentences:
text: Now the first question you may ask is why will the airflow be Mach 1 at some point on a body when the overall airflow (or "freestream" flow) is only at Mach 0.7 or 0.8.