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bolt hole
coal.	trou d'ancre
construct.	orifice boulonné
mech.eng.	trou de boulon; trou de vis; trou de passage des boulons; trou de passage pour vis; trou lisse; trou pour boulon
met.	galerie de contournement; passage de ventilation

bolt hole: 11 phrases in 5 subjects

Agriculture	1
Loading equipment	3
Mechanic engineering	5
Technology	1
Transport	1