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Dialogue 10 laurance--What time doesd the bus leave for the airport? soony--I don't know.It used to leave every half hour,but I think the schedule's been changed. laurance--Do you know the telephone n
PPSN public packet switched network Premises Distribution System (PDS) PDS is the transmission network inside a building or among a group of buildings, for example an office park or a campus. PDS is u
Frame In time division multiplexing systems, Frame is a sequence of time slots each containing a sample from one of the channels carried by the system. The frame is repeated at regular intervals, (nor
中文 英文 缩写 DSL传话音 Voice over DSL VoDSL D通道链路接入规程 Link Access Procedure for D channel LAPD D型子凹接头 female D-subconnector E/M 信令方式 Ear and Mouth signalin
Obituary;Ray Anderson; 讣告;雷安德森; Ray Anderson, America's greenest businessman, died on August 8th, aged 77. 雷安德森,美国最具环保意识的生意人,于8月8日逝世,享年77岁。 WHEN Ray Anderson first encountere
Bus driver : Move to the rear of the bus, please. There're plenty of seats in the rear. Daisy : How much is the fare, please? Bus driver : Thirty cents. Drop it in the box. Daisy : Does this bus go to Washington Park? Bus driver : Take Bus No. 9. Thi