短語(yǔ)詞組短語(yǔ)circuit t switching 線路交換;通道轉(zhuǎn)換Circuit -switching vs packet-switching 電路交換與包交換vacuum circuit breaker switching 真空斷路器操作end -to- blocking circuit-switching 耑分區(qū)段電路開(kāi)關(guān)circuit switching system 數(shù)據(jù)電路交換機(jī);廻路交換方式FCS Fast Circuit Switching 快速線路切換 返回 circuit switching