math01 202.38.126.65/nankaisource/graphics 马鞍面)只有两族直母线, 所以参数曲线即直
回答: 季候风 相空间是位形空间的 “余切丛”,cotangent bundle, 也就是把每一位形上的余切空间(该位形所有可能广义动量
由 marketreflections
于 2011-12-10 09:26:06
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