长途交换台 trunk switchboard ; toll switch board
长途交换系统 toll switching system
长途交换机 toll exchange ; toll switch ; switchboard trunk
长途交换干线 toll switching trunk
长途交换运营商 Inter-Exchange Carrier ; IXC ; IXC Inter-Exchange Carrier
共电式长途交换机 central battery toll switchboard
立接制长途交换系统 demand basis toll switching system
长途电话自动交换机 automatic toll switching system
长途电话交换机 long distance telephone exchange ; toll telephone switching system
·2,447,543篇论文数据，部分数据来源于NoteExpress
文章介绍了上海长途交换设备集中监控系统的功能和特点。
The functions and characteristics are introduced in the text about centralized monitor system of Shanghai long-distance switching equipments.
新增长途光缆27000皮长/公里，数字微波干线14400公里，电话交换机容量1961万门。
The total lance of long distance optical cable increases by 27000 sheet km, that of digital microwave links by 14,400 km and the number of telephone lines by 19.61 million.
新增长途光缆27000皮长/公里，数字微波干线14400公里，电话交换机容量1961万门。
The total lance of long distance optical cable increases by 27000 sheet km, that of digital microwave links by 14, 400 km and the number of telephone lines by 19.61 million.
应用推荐