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возвращающая пружина stresses
automat.	back spring; check spring
mech.eng., obs.	return spring
media.	backmoving spring
railw.	centering spring
tech.	back-moving spring; backward spring
возвращающаяся пружина
mech.eng., obs.	backmoving spring; backwards spring
wood.	back-moving spring

возвращающая пружина: 2 phrases in 2 subjects

Rail transport	1
Technology	1