What does "Frequency band" mean?
“频段”是什么意思?
A frequency band is an interval in the frequency domain, within the limits of a lower and an upper frequency. WiFi signal is broadcast on two frequency bands: 2.4 GHz and 5 GHz. Each band is split into multiple channels that are used by various wireless networks.
频段是频域中的一个区间，位于较低和较高频率的范围内。WiFi 信号在两个频段上广播：2.4 GHz 和 5 GHz。每个频段划分为多个频道，由各种无线网络使用。