"Part21: " CNS Standards List| Dental Silver | Involute Splines | Method test | Audio, video | Hydrochloric acid | 75 ohm | Office document | Quartz Crystal | |
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CNS 14466-21
2017 Edition Audiovisual, video and television equipment and systems - Part21: Video tape leader and trailer for education and training applications 視聽．影像及電視設備與系統-第２１部：教育及訓練用之影像磁帶帶頭與帶尾 |
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CNS 14466-21
2000 Edition Audiovisual, video and television equipment and systems - Part21: Video tape leader and trailer for education and training applications 視聽、影像及電視設備與系統－第21部：教育及訓練用之影像磁帶帶頭與帶尾 |
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