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Terms for subject Telecommunications containing 长途通信 | all forms | in specified order only
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长途光通信线路long-haul optical link
长途通信long-haul communication (long-haul communication 的原意为性能更高,距离更远,业务量更大的长途通信)
长途通信long distance communication
长途通信业务long distance traffic
长途通信业务long distance service
长途通信公司经营 LATA 之间的通信业务,如 AT&T,Sprint, MCI 等电信公司interexchange carrier IXC