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[国外标准] IEC 60793-2-70:2017 Optical fibres- Part 2 70: polarization maintaining fibres

P:2021-05-19 15:30:58

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IEC 60793-2-70:2017 Optical fibres- Part 2 70: Product specifications- Sectional specification for polarization maintaining fibres

SCCEW - single cotton coveredenamelled wire单纱包漆包线 (0) 投诉

P:2021-05-25 14:41:29

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线缆行业一直很神奇,光纤又回来了

micrometer - 测微计,千分尺;微米(10的-6次方m) (0) 投诉

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