empty state meaning in Chinese

空态

Each electron in the band has nowhere to go ? it has no empty states available where it can move
能带中的每个电子都无处可去，因为没有空的状态可以去。
In the chapter 4 , we make an extension to the model of the chapter - 2 . the service speed change is instant , that is say , during the service using speed - 1 to serve , if the number exceeds the threshold n , then the server should immediately use speed - 2 not speed - 1 to serve current customer and the next till entered the empty state . we especially point out that the classical m / g / 1 queuing model and the m / g / 1 queuing with n - policy are the particular cases of model discussed in chapter - 4
第四章对第二章讨论的模型进行了进一步的扩展，其服务速度1到速度2的转移规则是瞬间转移，也即当服务台以速度1服务顾客的过程中如发现系统中的顾客数已超过门限n值时就即刻调整为以速度2服务当前顾客和后续顾客直到系统变空的可修m g ( m g ) 1排队系统，并指出经典的m g 1和具有n -策略的m g 1排队是本章研究的两种特例。