The latter are process services such as a shopping cart application or an order where the customer and other stakeholder can get the current state while it gets processed.
后者是一个过程服务(如购物车应用或一个订单)，在它被处理时用户和其他涉众可以得到当前状态。
Article made a distinction with "time window" in concept and in the current study, the express service is defined as the volume per unit time of transportation and delivery of customer Numbers.
在概念上将快运定义为单位时间的运货量和送货的客户数，与“时间窗”做了区别。
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