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[GB 4576-1984] 載波系統基群變頻基本技術要求[已作廢]
發布時間：1985-04-01
實施時間：1985-04-01
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[GB 4577-1984] 載波系統通路變頻級基本技術要求[已作廢]
發布時間：1985-04-01
實施時間：1985-04-01
|
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[YD/T 553-1992] 載波系統基群變頻級基本技術要求[現行]
發布時間：1900-01-01
實施時間：
原GB 4576-84調整為YD標準 ，無行標文本。
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[YD/T 554-1992] 載波系統通路變頻級基本技術要求[現行]
發布時間：1900-01-01
實施時間：
原GB 4577-84調整為YD標準 ，無行標文本。
|
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