n.泊松
If you know what failures look like statistically, they follow a Poisson distribution, aka a bell curve. 如果您知道是什么样子的失败统计，他们遵循泊松分布，又名一钟形曲线。
Application for a small-area estimation of breast cancer mortality using Poisson distribution is illustrated. 应用举例为使用泊松分布求取乳癌死亡率之小区域估计。
