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发明名称
An improved method of and meter for determining the apparent power or apparent energy consumption in a balanced polyphase system
摘要
申请公布号
GB771491(A)
申请公布日期
1957.04.03
申请号
GB19540019762
申请日期
1954.07.06
申请人
LANDIS & GYR A.G
发明人
分类号
G01R21/00
主分类号
G01R21/00
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