9. Little’s Law Total Cycle Time = Number of Things in Process Average Completion Rate
10.
Editor's Notes
The long-term average number of customers in a stable system L is equal to the long-term average arrival rate, λ, multiplied by the long-term average time a customer spends in the system, W , or: L = λ W 即在一个稳定的系统中长期的平均客户数 L 等于长期的平均到达率 λ 乘以一个客户在系统中花费的长期的平均时间 W 。