"Optical return " CNS Standards List| Conversion tables | Testing methods | Receiver fire | Information Processing | Dimethylglyoxime | Wedge Tool | Square Shovels | Picks | |
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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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