"Centrifugal prestressed " CNS Standards List| Glossary terms | Signalling system | Terms Relating | Polyvinyl chloride | Stationary training | Knife Switches | Method Test | Transmission non | |
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CNS 14245
2019 Edition Centrifugal prestressed concrete pole (for communication line) 電信用離心法製預力混凝土電桿 |
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