With the continuous progress of transmission technique and the rapid development of data and Internet services, the application of Automatic Switch Optical Network (ASON) has been evolved widely.
随着传输技术的不断进步和数据及互联网业务的迅猛发展，智能光网络的应用越来越广泛。
2
Were there no transformers to switch the voltage, long-distance transmission of electricity would be impossible?
要是没有变压器来调节电压，远距离输送电力是不可能的。
3
The operations of current transmissionswitch used to realize threshold-controlling circuits are established.