无网隙的

Firstly, the model of distributed single-hop fully-connected FH-PRNs for missile systems is developed in this dissertation, which fully describes the physical and link level characteristics of the network. Common-transmitter-based spreading codes protocol and unslotted ALOHA channel access protocol are adopted, considering two types of services, i. e. Unacknowledged Data Packet and Acknowledged Data Packet.

首先，本文建立了战术导弹武器系统分布式单跳全连接跳频分组无线网的网络模型，所建模型充分地反映了网络的物理层和链路层特性，采用了公共码加发射码的扩频码协议及异步非时隙ALOHA信道访问协议，考虑了两类业务的情况，即无应答数据分组和有应答数据分组。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。