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step-wedge
cultur.	Stufenkeil m
step wedge
opt.	Stufengraukeil m
phys.	Stufenkeil m

step-wedge : 12 phrases in 8 subjects

Cultural studies	2
Earth sciences	1
Electronics	1
Environment	1
Lighting other than cinema	1
Optics branch of physics	3
Physics	2
Technology	1