1、I often set my watch by the time signal in the telephone.
我常常按電話里的報時信號對表。

2、You can also activate hourly time signal that indicates each full hour.
您還可以激活每小時時間信號，表明每個整整一個小時。

3、"Modulation domain" is a plane domain which is consisted of frequency and time signal axes.
“調(diào)制域”是由信號的頻率和時間兩個軸構(gòu)成的平面域。

time signal翻譯