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交流电流基准
释义
交流电流基准
Encyclopedia
工学
交流电量计量
释
AC current standard
交流电流基准
建立和保存交流电流量值的国家级计量装置。电流标准的频率范围较宽,从工频50赫兹向上至100千赫。
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hydropower development planning of Yalu river
hydropower engineering
hydropower planning
hydropower planning of river
hydropower resources
hydropower resources of China
hydropower resources of ocean
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hydropower station with powerhouse as dam
hydropower station with powerhouse at dam toe
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