同义词
1)emergency source frequency monitoring card,应急电源频率监控卡2)emergency source frequency monitoring,应急电源频率监控3)emergency source voltage monitoring card,应急电源电压监控卡4)emergency source undervoltage pc card,应急电源低电压程控卡5)emergency source voltage pc card,应急电源电压程控卡6)emergency source voltage monitoring,应急电源电压监控
