回複：錢學森給本科生的期終考題

來源: 於 2010-01-11 12:15:33 [舊帖] [給我悄悄話] 本文已被閱讀：次

Are you sure this question was from 錢學森? If it was,錢was not a good Prof.,though he was a great scientist.
Question is not clear.