美國高科技公司技術儲備都好幾代，用不用是主要商業考量；但一旦有國家危機就不一樣了。波音二戰飛機年產量10萬架！

來源: Dotline 於 2023-09-05 10:11:18 [舊帖] [給我悄悄話] 本文已被閱讀：次

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