材料穩定性一直是致命的。八十年代黃昆的學生對我說他們他們基本是拿票子堆的成本。。

來源: borisg 於 2020-10-08 18:04:02 [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.