短語詞組短語ground service bus 地面勤務(wù)匯流條GSB Ground Service Bus 地面服務(wù)匯流條ground -bus s 接地母線ground d bus 接地線ground bus line network 道路公交線網(wǎng)fault ground bus 故障接地母線insulated ground bus 隔離的接地母線electrical ground bus 電氣地面公共汽車 返回 ground bus