就电缆电视系统信号电平变化的几种情形作系统的理论分析，并指出解决办法，供广大有线电视系统工作人员参。

Mainly analyses several cases of signal level variation in CATV system, and also points out practical methods to be consulted by workers in CATV system.

youdao

就电缆电视系统信号电平变化的几种情形作系统的理论分析，并指出解决办法，供广大有线电视系统工作人员参。

Mainly analyses several cases of signal level variation in CATV system, and also points out practical methods to be consulted by workers in CATV system.

youdao