three-phase three-wire watt-hour meter
three-phase three-wire watt-hour meter 三相三线有功电度表 three-phase totally-enclosed squirrel-cage induction motor 三相全封闭鼠笼型感应电动机 ..
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三相三线有功电度表 hour meter ; hourmeter,kWhmeter 三相三线制 wire system ; wire sysyem 交流三相三线绝缘系统 AC three phase three wire insulated syste...
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