对中国飞行员来说，30年代的俄机操作起來很不方便，缺少液压系統。

来源: 萍踪新语于 2021-09-07 11:24:42 [博客] [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.