20世纪70年代初,经济实力相对衰弱迫使美国对外贸易政策更加务实,构成了美国实行多轨制对外贸易政策的主要原因。实行多轨制对外贸易政策以来,美国经济结构进一步软化和其他国家的贸易摩擦进一步增加。多轨制对外贸易政策的实质是全面的贸易保护,其目的在于保护本国弱势部门,发展本国强势部门,是一种以绝对优势作为制定对外贸易政策基础的贸易管理方式。 In the early 1970s, the relatively weak economic strength forced the U.S. foreign trade policy to be more pragmatic and constituted the main reason why the United States adopted a multi-track foreign trade policy. Since the implementation of the multi-track foreign trade policy, the U.S. economic structure has softened further and the trade frictions of other countries have further increased. The essence of multi-track foreign trade policy is comprehensive trade protection. Its purpose is to protect its own disadvantaged sectors and develop its own powerful sectors. It is an approach to trade management based on absolute superiority as the basis for formulating its foreign trade policy.