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Quarzgut n
chem.	fused quartz (milchig-trübes Quarzglas)
construct.	fused quartz
industr., construct., chem.	translucent fused silica; translucent vitreous silica
industr., construct., met.	fused silica

Quarzgut: 2 phrases in 2 subjects

General	1
Optics branch of physics	1