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IEC 60793-1-21:2001 EN-FR
Optical fibres - Part 1-21: Measurement methods and test procedures - Coating geometry
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发布日期 :
2001-08-30
实施日期 :
IEC 60169-21:1985/AMD1:1996 EN-FR
Amendment 1 - Radio-frequency connectors. Part 21: Two types of radio-frequency connectors with inner diameter of outer conductor 9.5 mm (0.374 in) with different versions of screw coupling - Characteristic impedance 50 ohms (Types SC-A and SC-B)
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发布日期 :
1996-01-23
实施日期 :