German ⇄ Bulgarian Czech Dutch English French Italian Japanese Polish Romanian Russian Spanish

Grundmaterial n
gen.	basic material; raw material; base fabric
antenn.	host crystal
comp.	base material
construct.	basic materials; main materials; parent material (Schweißen); key
econ.	direct material; productive material
microel.	bulk; host; host material
nucl.phys., OHS	bulk material
opt.	backing material; matrix

Grundmaterial: 2 phrases in 2 subjects

Earth sciences	1
Natural sciences	1