別急著吹。航天飛機當初也是說重複使用，降低成本。結果是成本更高，安全性也有問題。

來源: 相對強度於 2015-12-22 08:18:38 [博客] [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.