会计里unit-level activities batch -level activities

问题补充：

会计里unit-level activities, batch -level activities, product-level activities,还有facility-level activities, 怎么解释?用中文.

答案：

是物流成本里作业水准的分类吧?这四个分别是是单位水准,批量水准,产品水准和设备水准