The technology improved the signal transmission of alarming system for coal mine safety at pr…

该技术改进了目前煤矿安全报警系统中所采用的信号传输技术和方法。

youdao

The technology improved the signal transmission of alarming system for coal mine safety at pr…

该技术改进了目前煤矿安全报警系统中所采用的信号传输技术和方法。

youdao