建国以来,我国航空工业有很大的发展。由于国内外形势的需要,长期以来发展重点放在军用飞机上。民用飞机虽然也有些进展,但起步较晚,直到七十年代,国内航线基本上没有使用过国产飞机,民用飞机的研制还没有走出自己的路子。 Since the founding of our country, our aviation industry has great development. Due to the needs of the situation at home and abroad, the development has long focused on military aircraft. Civil aircraft although some progress, but started late, until the seventies, the domestic routes have basically not used domestic aircraft, civilian aircraft has not yet developed its own way.