signal (electrical engineering)中文什么意思

信号 (信息论)

• signal:    n. 1.信号，暗号；信号器。 2. ...
• electrical engineering:    电机工程。
• electrical signal:    电信号

百科释义

A signal as referred to in communication systems, signal processing, and electrical engineering "is a function that conveys information about the behavior or attributes of some phenomenon". In the physical world, any quantity exhibiting variation in time or variation in space (such as an image) is potentially a signal that might provide information on the status of a physical system, or convey a message between observers, among other possibilities.