不是说c919是自主研发的吗，发动机有中国专利127件吗？

来源: victor1988 于 2023-05-07 08:33:02 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.