自动交换系统 [通信] automatic switching system
- 自动交换系统中一些固定结点的组合,用来建立电气连接。
In automatic switching, an assemblage of fixed contacts used to establish electrical connections. - 对M84组成的火焰自动交换系统的原理和工作程序也作了介绍。
In this paper the principle and working process of M84 flame auto reversing system is also described. - 专用自动交换分机(PABX)是单个企业内部的自动电话交换系统。
Private Automatic Branch Exchange (PABX) is an automatic telephone switching system within a private enterprise.