有线电视系统设备。
A practical method of Cable TV transmission system self-design is put forward.
提供了一种适合建网地区自行设计电缆电视传输系统的方法。
And cable TV system won't usually cause inconvenience to people's life.
而且闭路电视系统通常不会引起人们生活的不便。
And cable TV system won't usually cause inconvenience to people's life.
而且闭路电视系统通常不会引起人们生活的不便。
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