分组交换通信 meaning in Chinese

packet switching communication

Mobile phones with packet - switched communication appear to be " always connected " to the data network , whereas in the case of circuit - switched connections , setup time takes around 30 seconds to connect from a mobile phone to an isp
具有分组交换通信功能的手机似乎“始终连接”到数据网络，但是，对于电路交换连接，设置时间大约需要30秒才能将手机连接到isp 。