Question is not clear.
回复:钱学森给本科生的期终考题
Are you sure this question was from 钱学森? If it was,钱was not a good Prof.,though he was a great scientist.
Question is not clear.
Question is not clear.
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• 回复:回复:钱学森给本科生的期终考题 -commentate- ♂ (154 bytes) () 01/11/2010 postreply 12:26:05