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The Canadian helicopter is one of the most widely used helicopters in the world.
The double-decked, wide-bodied passenger aircraft can carry more then 500 passengers.
A bireme is a type of ancient warship, with a characteristic pointed bow and two decks of...
This animation demonstrates the equipment of a police patrol car.
The most popular European-made transport aircraft before World War II.
A Zeppelin is a type of controllable, rigid airship.
This animation demonstrates how sonar works.
Types of bridges include beam-, arch-, suspension-, cantilever and truss bridges.