1. The ship's chronometer, the screw propeller, the locomotive, bicycle, automobile, and airplane were all invented in the West.

2. The strength calculation formula of the screw propeller under the action of centrifugal force was obtained through multivariate fitting.

3. Airplane, also called Aeroplane or plane, any of a class of fixed-wing aircraft that is heavier than air, propelled by a screw propeller or a high-velocity jet, and supported by …

4. Airplane, also called aeroplane or plane, any of a class of fixed-wing aircraft that is heavier than air, propelled by a screw propeller or a high-velocity jet, and supported by the dynamic reaction of the air against its wings