Inside and outside cable and circuit laying out, guarding, connection, switch-in, leading out and conductor arrangement of internal signal room on construction site.
工程地点内信号室内外电缆及电线路的敷设、防护、接续、引入、引出、配线等。
2
This paper introduces the automatic control circuit time in turn driven by inverter with the using and the reserved load and combined switchconnection.