: mechanism comprised
mainly of pedals, cranks and a chain wheel that drives a bicycle.
: chassis of a bicycle.
: roller bearing.
: metal plate covering the ball bearings.
: support that holds a disk clutch.
: foot-operated system used to propel a bicycle.
: arm perpendicular to an axle, used to give it circular
: ball-bearing mechanism used to reduce friction
between pieces rolling on each other.
EN : Bridge
FR : Structure
ES : Estructura
A bridge is a structure built to span
a gorge, valley, road, railroad track, river, body of water, or any
other physical obstacle. Designs of bridges vary depending on the function
of the bridge and the nature of the terrain where the bridge is to be