It USES the binomial distribution to calculate the probability of getting any specific number of accidents.
保险公司就可以用二项分布公式，来计算特定数目事故发生的概率。
2
If you follow through from the independent theory, there's one of the basic relations in probability theory — it's called the binomial distribution.
如果继续往下看，在概率论里有一个基本的概念，叫做二项分布。
3
In the measurement of low-level radioactivity, instead of Poisson distribution, a negative binomial distribution is proposed to denote the probability distribution of actual counts.