In mathematics, specifically set theory, the Cartesian product of two sets A and B, denoted A × B, is the set of all ordered pairs where a is in A and b is in B. In terms of set-builder notation, that is A × B = { ∣ a ∈ A and b ∈ B }.
In firearms, the cylinder is the cylindrical, rotating part of a revolver containing multiple chambers, each of which is capable of holding a single cartridge.
Un barillet en tuyauterie est un élément tubulaire d'acier ou acier inoxydable, terminé par un fond bombé à chacune de ses extrémités, et qui inclut sur sa longueur plusieurs départs perpendiculaires de tuyauterie, généralement isolables par des vannes.
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