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spring lock
construct.	Springhakenschloß n
med.	Federschloß n
weap.	Federverschluss m

spring locking : 48 phrases in 9 subjects

Automobiles	1
Construction	5
General	5
Industry	5
Materials science	2
Mechanic engineering	8
Technology	9
Transport	1
Weapons and gunsmithing	12