大型飞机发动机的技术难度从某种程度上说已超过军用航空发动机。因此,了解其技术发展方向,借鉴国外成功经验,是我国大型飞机发动机研制的关键。 The technical difficulty of a large aircraft engine has to some extent exceeded the military aeroengine. Therefore, to understand the direction of its technology development and learn from the successful experience of other countries is the key to the development of large aircraft engines in China.