标准名称：JIS C 1102-4-1997 Direct acting indicating analogue electrical measuring instruments and their accessories Part 4：Special requirements for frequency meters
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更新日期：2011年10月26日
内容简介
JIS C 1102-4-1997 Direct acting indicating analogue electrical measuring instruments
and their accessories Part 4：Special requirements for frequency meters
and their accessories Part 4：Special requirements for frequency meters
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