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标题: IEEE standard for frequency aspects [查看完整版帖子] [打印本页]

时间: 2017-2-11 13:55

作者: lvboodvl 标题: IEEE standard for frequency aspects

RT~ thx！

附件: IEEE Standard Definitions of Physical Quantities for Fundamental Frequency and T.pdf (2017-2-11 13:53, 917.96 KB) / 下载次数 2
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