一、概述我国是一个自行车大国,但长期来一直处于款式单一、变速单一和功能单一的状况。根据我国的国情和道路交通现状,大量发展轿车和摩托车的可行性不大。在近阶段,我国城市的主要交通工具仍是公共汽车和自行车,在中、小型城市里自行车就更为重要。如何顺应国际自行车的发展潮流,尽快改变我国自行车的现状,已成为改善我国交通状况的一大课题。 First, an overview China is a big country bicycle, but has long been in a single style, single-speed and single function of the situation. According to China’s national conditions and road traffic status quo, a large number of cars and motorcycles is not feasible. In the recent period, the main means of transportation in our cities are still buses and bicycles, and bicycles are even more important in small and medium-sized cities. How to adapt to the development trend of international bicycles and change the status quo of our bicycles as soon as possible has become a major issue for improving the traffic conditions in our country.