送交者: zhangqq 于 2011-03-01, 18:19:45:

回答: Data aequatione quotcunque fluentes quantitae 由 zhangqq 于 2011-03-01, 18:19:37:

• 据说是这个意思：It is useful to solve differential equations. (无内容) - zhangqq (0 bytes) 2011-03-01, 18:20:39 (554534)

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