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目前國(guó)內(nèi)大部分電力專網(wǎng)都已建有SDH光環(huán)網(wǎng)，它具有自愈環(huán)功能，當(dāng)一端光纖線路中斷了還可以從另外一端將數(shù)據(jù)傳輸過(guò)去。但并不是每一個(gè)SDH設(shè)備都處于環(huán)網(wǎng)里，就好比一些省市地域廣闊，電力通信線路比較長(zhǎng)，某一些變電站形成自愈環(huán)比較困難，不但投資大，需要的光纜資源多，…
2024-4-26 21:49:35[未知IP0801]網(wǎng)友
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2024-4-26 21:39:00[未知IP0801]網(wǎng)友
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2024-4-26 21:28:22[未知IP0801]網(wǎng)友
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2024-4-26 21:17:47[未知IP0801]網(wǎng)友
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2024-4-26 21:07:12[未知IP0801]網(wǎng)友
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2024-4-26 20:56:37[未知IP0801]網(wǎng)友
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2024-4-26 20:46:02[未知IP0801]網(wǎng)友
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2024-4-26 20:35:27[未知IP0801]網(wǎng)友
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2024-4-26 20:25:13[未知IP0801]網(wǎng)友
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2024-4-26 20:16:45[未知IP0801]網(wǎng)友
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2024-4-26 20:14:38[未知IP0801]網(wǎng)友
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2024-4-26 20:04:03[未知IP0801]網(wǎng)友
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2024-4-26 19:54:11[未知IP0801]網(wǎng)友
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2024-4-26 19:43:57[未知IP0801]網(wǎng)友
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2024-4-26 19:33:43[未知IP0801]網(wǎng)友
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2024-4-26 19:23:08[未知IP0801]網(wǎng)友
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2024-4-26 19:12:33[未知IP0801]網(wǎng)友
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2024-4-26 18:52:19[未知IP0801]網(wǎng)友
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