1) Answer Signal,No Charge ANN
应答信号，不记费
2) Answer Signal,Charge ANC
应答信号，记费
3) answer signal with charge
计费应答信号
4) responsive signal
应答信号
1.
The working principle and method of IFF systems were analyzed for a certain type of airplane, and particular study was made on how to implement encoding and decoding of the inquiring and responsive signal.
从某型机的实际工程背景出发,对其协同敌我识别系统的工作原理和实现方法进行了研究,特别对询问、应答信号编码和解码的实现方法进行了探索。
5) tick
[英][tɪk] [美][tɪk]
滴答声;信号;记号
补充资料：计费
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