信号通过天线与额外功率能够传输很长的距离。
An antenna and extra power allow the signal to be transmitted over long distances.
按照信号传输距离粗略的划分,无线技术可以分为五类。
Wireless technology can be split into five main sorts, roughly ranked by the distance that the signals travel.
这一困难对于长距离传输最为严重,不过,即便传输距离只有几百英里,有时也会出问题。
The difficulty is most acute for long-distance transmission, but shows up at times even over distances of a few hundred miles.
应用推荐