digital exchange中文什么意思

数字交换机

• digital:    adj. 1.手指的；指状的。 2. ...
• exchange:    vt. 1.(以某物与另一物)交换， ...
• c digital toll exchange:    程控数字长途电话交换机

例句与用法

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1. Digital exchange for power system dispatching
   电力系统数字调度交换机
2. Refers to the per cent of main lines connected to digital exchanges
   指连接到数字交换机的主线百分比。
3. Program controling of digital exchange
   程控数字交换
4. Telecommunications - digital exchanges and pbxs - digital circuit loopback test line with n x ds0 capability
   电信.数字交换和pbxs . n x ds0容量的数字线路回路试验线路
5. The text firstly introduces the status of the program controlled exchange , and compares simulative exchange with digital exchange in the performance , and points out the developing direction of the future digital exchange
   本文结合课题首先介绍了程控交换机的发展状况，对模拟交换机和数字交换机进行了性能比较，并指出未来数字交换机的发展方向。