送交者: yell 于 2008-11-22, 20:43:33:

回答: "不能有两个电话同时打到"就隐含了小概率。 由 yell 于 2008-11-22, 20:38:43:

• non-clamping is one of the three assumption of Poisson - HunHunSheng (71 bytes) 2008-11-22, 20:49:07 (276852)

加跟贴