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目前國內(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)傳輸過去。但并不是每一個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，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，…
2024-4-27 1:05:05[未知IP0801]網(wǎng)友
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2024-4-27 0:54:51[未知IP0801]網(wǎng)友
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2024-4-27 0:46:23[未知IP0801]網(wǎng)友
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2024-4-27 0:44:16[未知IP0801]網(wǎng)友
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2024-4-27 0:33:41[未知IP0801]網(wǎng)友
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2024-4-27 0:23:48[未知IP0801]網(wǎng)友
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2024-4-27 0:13:34[未知IP0801]網(wǎng)友
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2024-4-26 23:52:42[未知IP0801]網(wǎng)友
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2024-4-26 23:42:07[未知IP0801]網(wǎng)友
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2024-4-26 23:00:50[未知IP0801]網(wǎng)友
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2024-4-26 22:50:57[未知IP0801]網(wǎng)友
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2024-4-26 22:30:51[未知IP0801]網(wǎng)友
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2024-4-26 22:20:16[未知IP0801]網(wǎng)友
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2024-4-26 22:09:41[未知IP0801]網(wǎng)友
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2024-4-26 21:59:48[未知IP0801]網(wǎng)友
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