Mainly refers to the axle of a truck, or a truck that becomes an axle and has a front axle and a rear axle, which is called a 2-axle truck; One front axle and two rear axles are called 3-axle vehicles; At present, many trucks have double front axles, so that two front axles and one rear axle are three-axle vehicles, and two front axles and two rear axles are four-axle vehicles. A truck is a commercial vehicle designed and equipped mainly for carrying goods, whether it can tow a trailer or not. Trucks are generally called trucks, also known as trucks, which refer to cars that are mainly used to transport goods, and sometimes refer to cars that can tow other vehicles, belonging to the category of commercial vehicles.

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