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Kieselglas n -es, ..gläser
gen.	silica glass; vitreous silica; fused silica
chem.	flint glass
el.	fused quartz; quartz glass
industr., construct., chem.	transparent fused silica; transparent vitreous silica

Kieselglas: 3 phrases in 3 subjects

Chemistry	1
Industry	1
Mining	1