多频记发器 meaning in English
multi-frequency coding register
Examples
- Multi frequency register signaling system for telephone automatic switching network
电话自动交换网多频记发器信号方式 - Multi - frequency coding register
多频记发器 - The test methods for the technical specifications of multi - frequency register signaling for telephone automatic switching network
电话自动交换网多频记发器信号技术指标测试方法