1. Brief introduction about motorcycle overview

　　Motorcycle is one of the common means of transportation. Motorcycles generally use gasoline as an energy source, which requires manpower to master the direction when driving. It generally has two wheels and three wheels, and it has many characteristics. For example, because its scale is smaller than a car, it is said to be more flexible, but because it is driven by gasoline, it is said to be faster than a bicycle. Motorcycles have many advantages. Although almost every one of us has taken them, do you know the relevant knowledge about it? What is it composed of, and what classification does it have? What is it driven by? I believe many people will have doubts about this. This article will introduce the related knowledge of motorcycles in detail, let's learn it together!

　　2. A brief description of the origin and development of motorcycles

　　Motorcycles first appeared in the 1880s. European scientists invented the prototype of modern motorcycles. At that time, they added an engine to an installed frame. At that time, the speed of motorcycles was relatively slow due to the reasons of science and technology and power. Until the 1930s, with the efforts of scientists from various countries to research and create, as well as with the advancement of science and technology, motorcycles entered a period of relatively rapid development, and its development pattern became closer and closer to the shape of modern motorcycles. . It was only after the 70s that the form of our common motorcycles began to be widely popularized.

　　3. Brief description of other related knowledge about motorcycles

　　We mentioned earlier that the energy drive used by motorcycles is mainly gasoline. We know that gasoline combustion produces gases that are harmful to the environment, so the operation and driving of motorcycles will cause certain harm to the environment. There is a question, how to reform and improve the performance of motorcycles so as to make it more environmentally friendly? We should vigorously improve scientific and technological reforms and improve the production methods of motorcycle engines, so that they can travel longer with less fuel, and increase the utilization rate of gasoline to develop motorcycles.