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Duekern adj.
mech.eng., construct.	usage d'un siphon inversé
Dueker adj.
construct.	aqueduc sur siphon inversé
mech.eng., construct.	chute en puits avec buse
transp., construct.	aqueduc-siphon; siphon inverse

Duekern : 3 phrases in 2 subjects

Construction	1
Mechanic engineering	2