vdc_bus_有道手机词典

1.According to the principle of power over Ethernet, the method of RS-485 bus power is applied to implement the transmission of 48 VDC and data signals via the same twisted-pair electric cable.
基于以太网供电原理，采用RS - 485总线供电方式，实现48 V直流能量与数据沿同一线对的叠加传输。
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