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The Canadian helicopter is one of the most widely used helicopters in the world.
Robert Fulton American engineer created the first operational steam-powered ship.
The first supersonic passenger airliner entered service in 1976.
The double-decked, wide-bodied passenger aircraft can carry more then 500 passengers.
The Benz Patent-Motorwagen is widely regarded as the first vehicle propelled by an...
Types of bridges include beam-, arch-, suspension-, cantilever and truss bridges.
HMS Dreadnought revolutionized battleship-building in the 20th century.
This animation demonstrates the equipment of a police patrol car.