进入二十一世纪,一股换装新一代战斗机的风潮迅速席卷世界各国空军。无论是财大气粗的发达国家,还是日子过得紧巴巴的发展中国家,都想方设法更新换代。有的从第三代升级到第四代,有的则是从第二代升级到第三代。但众多军事专家指出:换装新一代作战飞机这一做法,并不值得各国不 Into the twenty-first century, a wave of dress up a new generation of fighter jets quickly swept the world’s air force. Whether it is rich and powerful developed countries, or the days of tight-knit developing countries, all find ways to upgrade. Some from the third generation to the fourth generation, others from the second generation to the third generation. However, many military experts have pointed out: The replacement of a new generation of combat aircraft does not deserve the benefit of all countries.