multipath signal的用法和样例：
例句
- This method can be widely used in the portable measurement system which needs transfer signal through PCM modulation.
该方案可以用于需要以脉冲编码调制方式传输信号的便携式测量系统。 - An unbalanced line is generally a single-conductor shielded cable with the center conductor carrying the signal and the shield at ground potential.
对于非平衡式信号线来说，就是一根被屏蔽了的信号线，这个中心信号线传输信号，且相对于地电势。
