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Key words:
The ship generally has two usages in a narrow sense and a broad sense, and the development of the ship's propulsion mode has experienced two ways, one is the original wooden wheel propulsion by manpower, and the other is the modern mechanical propeller propulsion. A modern ship is a ship propelled by a mechanical engine and made of steel. The original steamship was propelled by human treading wooden wheels, modern steamships are steamships with external paddle wheels driven by steam, and modern ships use turbine engines.
Key words:
The ship generally has two usages in a narrow sense and a broad sense, and the development of the ship's propulsion mode has experienced two ways, one is the original wooden wheel propulsion by manpower, and the other is the modern mechanical propeller propulsion. A modern ship is a ship propelled by a mechanical engine and made of steel. The original steamship was propelled by human treading wooden wheels, modern steamships are steamships with external paddle wheels driven by steam, and modern ships use turbine engines.
Key words:
The ship generally has two usages in a narrow sense and a broad sense, and the development of the ship's propulsion mode has experienced two ways, one is the original wooden wheel propulsion by manpower, and the other is the modern mechanical propeller propulsion. A modern ship is a ship propelled by a mechanical engine and made of steel. The original steamship was propelled by human treading wooden wheels, modern steamships are steamships with external paddle wheels driven by steam, and modern ships use turbine engines.
Key words:
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