dual block meaning in Hindi

Examples

1. In July 1997, nearly one year before the disaster, �stra, the company that operates Hanover's tram network, discovered fatigue cracks in dual block wheels on trams running at about.
2. The car was designed by the engineer Giovanni Enrico, successor to the Faccioli who had engineered the first three Fiat models, it was the first Fiat and one of the first cars of this era equipped with a 4-cylinder engine with dual blocks.