Using SPC statistical control, optimization of inventory turnover period of production and service processes the operation, is designed to reduce process variation and waste.
采用SPC等统计技术控制，优化库存周转期的生产和服务过程那个的操作，目的是减少过程变差和浪费。
2
The variation of inventory turnover ratio is the inventory turnover in days, the latter means the average days the inventory is sold out.
存货周转率的另外一个变异指标是存货周转天数，后者意味着存货在多少天里被销售出去。
3
This article studies the optimal policy of production-inventory model in which time cycling is limited and cost parameter varies in stepped variation, and the definite way of cost parameter.