检索到 1 条 题名=The protection of telecommunication lines against the adverse effects of electric power lines 的结果
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西文图书1.Directives concerning the protection of telecommunication lines against harmful effects from electri TN913.3/ITI
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可借复本：1 The International Telegraph and Telephone Consultative Committee (C.C.I.T.T.) (New Delhi-1960).
The International Telecommunication Union, 1963.
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