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。
This paper introduces the automatic control circuit time in turn driven by inverter with the using and the reserved load and combined switch connection.
介绍变频器驱动一用一备负载的自动定时轮换控制电路及组合开关联接。
This paper introduces the automatic control circuit time in turn driven by inverter with the using and the reserved load and combined switch connection.
介绍变频器驱动一用一备负载的自动定时轮换控制电路及组合开关联接。
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