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Device for realizing short circuit fault current mode, calculates current based on preset expression defining time, sampling interval period, angular frequency power and testing parameter. 专利
申请日期: 2012-01-01, 公开日期: 2012-06-13
作者:  HUANG Z DUAN X ZOU J LIAO M WAN H L
收藏  |  浏览/下载:3/0  |  提交时间:2019/12/18
Tin-zinc-based near eutectic lead-free solder alloy for aluminum soft soldering, comprises specified amount of zinc, aluminum and tin. 专利
申请日期: 2012-01-01, 公开日期: 2012-12-12
作者:  KANG N ZHOU Q HUANG M DONG C ZHAO N
收藏  |  浏览/下载:6/0  |  提交时间:2019/12/18
Cyanide-free gold-tin alloy electroplating solution includes cyanide-free soluble monovalent gold salt, sulfite, organic polybasic acid, soluble divalent tin salt, pyrophosphate, and tin ion oxidation inhibitor. 专利
申请日期: 2012-01-01, 公开日期: 2012-08-22
作者:  HUANG M MA H PAN J ZHAO J ZHAO N
收藏  |  浏览/下载:3/0  |  提交时间:2019/12/18


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