"busy," CNS Standards List| Butadiene | Union Couplings | Polyvinyl formal | Polyacrylonitrile Staple | Assembly tools | Methods test | Household similar | Liquefied petroleum | |
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CNS 13883
2018 Edition Integrated services digital network call forwarding busy, call forwarding no reply and call forwarding unconditional supplementary service 整體服務數位網路–忙線時、未應答及無條件指定轉接增添服務 |
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