The invention has the technical effects that: dish exhibition rooms of a dining hall and the relevant dish-ordering service personnel can be reduced;
本发明的技术效果是：可以减少餐厅的菜品展示厅和相关的点菜服务人员；
The invention has the technical effects that: dish exhibition rooms of a dining hall and the relevant dish-ordering service personnel can be reduced;
本发明的技术效果是：可以减少餐厅的菜品展示厅和相关的点菜服务人员；
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