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замковый камень stresses
construct.	clé de voûte; clausoir m; clef f; clé; voussoir de dilatation; clé de la voûte
hydr.	voussoir du clavage
mining.	vousseau m; voussoir m
tech.	pierre de clavage; pierre de clé

замковый камень: 28 phrases in 4 subjects

Construction	7
Hydraulic engineering	2
Mining	4
Technology	15