Assertion: glass's flux | /r/CapableOf | modify alkaline earths
Facets:
Source sentences:
text: Compositionally a typical glass consists of the 'glass (or network) formers' (SiO 2 and B 2 O 3 ), fluxes (also called alkaline metals, K 2 O and Na 2 O), and the network (or matrix) modifying alkaline earths (CaO, BaO, PbO, ZnO).