| 释义 |
frequencychange signalling
变频通信法
A telegraph signalling method in which one or more particular frequencies correspond to each desired signalling condition of a telegraph code. The transition from one set of frequencies to the other may be either a continuous or a discontinuous change in frequency or in phase.
电报通信的一种方式,一个或多个专门频率和电报码的每一个所要发送信号的状态相适 应。从一个频率到另一个频率的过渡可以是频率或相位的连续或非连续的变化。 |