Assertion: radome | /r/MadeOf | resinous and plastic materials
Facets:
value: previously
type: TEMPORAL
Source sentences:
text: Radomes have been previously made of resinous and plastic materials, but such radomes are unsuited for use at supersonic speeds or on missiles and space vehicles, primarily because the materials are incapable of fulfilling the mechanical, thermal and aerodynamic and erosion considerations while maintaining their electrical characteristics.