例句與造句

1. In 1978, X . 25 provided the first international and commercial packet switching network, the International Packet Switched Service ( IPSS ).
2. The Western Union International and Tymnet collaborated to create the first international packet switched network, referred to as the International Packet Switched Service ( IPSS ), in 1978.
3. The "'International Packet Switched Service "'( IPSS ) was created in 1978 by a collaboration between the United Kingdom's General Post Office, Western Union International and the United States'Tymnet.
4. It's difficult to find packet switched service in a sentence. 用packet switched service造句挺難的