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Phase Control scr (250-350 amperes 200-2200 volts) 550 a, 1200 v, scr Phase Control scr (250-350 amperes 200-2200 volts) 470 a, 1800 v, scr Phase Control scr (250-350 amperes 200-2200 volts) 470 a, 1000 v, scr Phase Control scr (250-350 amperes 200-2200 volts) 470 a, 2000 v, scr Phase Control scr (250-350 amperes 200-2200 volts) 550 a, 600 v, scr Phase Control scr (250-350 amperes 200-2200 volts) 550 a, 200 v, scr Phase Control scr (250-350 amperes 200-2200 volts) 第一阶段控制晶闸管(250-350安培200-2200伏特 Phase Control scr (250-350 amperes 200-2200 volts) 550 a, 2200 v, scr
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