负载电源选择继电器
load power supply selective relay
可选电源选择开关继电器灯
selectable source option switch relay lamp
电压基准源的合理选择
Rational choosing avoltage reference
电源类型选择
selection of power sources
反向电源继电器选择
reverse power relay option
GIS服务动态选择选择机制
dynamic GIS service finding mechanism
爆电电源
ferroelectric power supply
钡离子选择电极
barium ion selective electrode
泵电源电路的运行
pump power circuit operation
标准电源电压不足时的印刷电路板
normal source undervoltage pc card
标准电源电压监控板
normal source voltage monitoring card