手感很好KAWAI cn290, weighted key, 新的.
所有跟帖:
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好。重的key好。今天我还想你这个北大统计专家。一个网友
-bearsback-
♂
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12/06/2009 postreply
18:16:01
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The exact question is this: 100 people visit this forum
-bearsback-
♂
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12/06/2009 postreply
18:42:45
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After you answer the above question, here comes a related
-bearsback-
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12/06/2009 postreply
19:07:30
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我也想搞清楚:什么是standard deviation? 我的书上都
-not.me-
♀
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12/06/2009 postreply
19:23:48
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standard deviation 很难。我一直没搞懂。
-bearsback-
♂
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12/06/2009 postreply
20:16:32