"Optical return " CNS Standards List| Measurement amplifier | Method Test | Method determining | Mica Plates | Decorated cement | Sodium hydroxide | Method test | Cemet Sack | |
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CNS 14337
2017 Edition Optical return loss meter 光回返損失計 |
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CNS 14337
1999 Edition Optical return loss meter 光回返損失計 |
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