近来美国和欧洲一些国家在制导武器领域内的研究活动增加。这些国家的军方针对不断增加的各种威胁和日益严格的交战规则,正在着手发展新的机载制导武器系统。 Recently, the United States and some European countries have increased their research activities in the field of guided weapons. The military forces in these countries are embarking on the development of new airborne guidance weapon systems in response to the ever-increasing threats and the increasingly rigorous rules of engagement.