脉冲线路 meaning in Chinese
impulse circuit
Examples
- Inband pulsing single frequency line signaling system for telephone automatic switching network
电话自动交换网带内单频脉冲线路信号方式 - The test methods for the technical specifications of inband pulsing single frequency line signalling system for automatic telephone switching network
电话自动交换网带内单频脉冲线路信号技术指标测试方法