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The first Hungarian-made locomotive powered directly from the national electricity...
Oil tankers appeared in the late 19th century; today they are among the largest ships.
The Wright Flyer was the first successful powered, heavier-than-air aircraft, designed...
This animation demonstrates how lifts work.
This animation demonstrates how sonar works.
This animation demonstrates the most important equipment of ambulance cars.
Combining a conventional internal combustion engine propulsion system with an electric...
A Zeppelin is a type of rigid-framed airship.