| 1. | Programm control exchanging system of de - xing copper mine
德兴铜矿程控交换系统 |
| 2. | Spc exchange fundamentals
程控交换原理 |
| 3. | All these changes took place after the first spc exchange was put into service in the capital in 1984 , enabling the use of pcm circuits for local trunks
这是从1984年北京开通第一个程控交换局，首次在市内中继使用pcm数字电路之后巨大的变化。 |
| 4. | The telephone network based on circuit - switching and digital program controlled exchanging technology plays an important role in the whole communicating networks
以电路交换和数字程控交换技术为基础的电话网更是在整个通信网中占据着重要的地位。 |
| 5. | According to the theory of spc exchange , we devise and develop an experimental system of automatic exchange to meet the need of teaching and practice
本文结合程控交换原理课程及其教学实践要求，开发了一套用于教学演示及实验使用的小型程控交换机仿真系统。 |
| 6. | And most of this knowledge has to been transferred to the students by pratice , so we need a set of simulation of the spc exchange
该课程侧重介绍程控交换的基本概念和工作原理，课堂教学内容迫切需要相应的实验辅助，以达到帮助学生正确掌握和深入理解课程内容的目的。 |
| 7. | The network forming scheme was put forward in accordance with hubei electric power program - controlled exchanging network . the problem with network forming of voice exchanging network of atm exchange was discussed
摘要概据湖北电力程控交换网的现状提出了组网方案，并对atm交换机在话音交换网络组网方面的问题作了探讨。 |
| 8. | The difficulties of the text are the use of the integrated dtmf receiver mt8870 and the signal generator circuit . their realities need occupy the pcm timeslots . they are the characters of the digital program controlled exchange
尤其对于收号器mt8870的使用、信号音的产生电路是本设计的难点，具有数字程控交换的特点，需要占用pcm时隙来完成其功能。 |
| 9. | With the rapid development of communication technology , the curriculum of the spc exchange theory has become the basic core in the colleges as the most important knowledge in the field of communication
随着现代通信技术的飞速发展与日益普及，程控交换原理与技术作为目前通信领域中应用最广的专业基础知识，已成为各高等院校电子通信类专业教学的核心课程之一。 |
| 10. | By dividing the large array antenna into a set of virtual subarray antennas , the receivers are connected to each subarray via a program - controlled switch based on time - division - multiplexing , and process the output snapshots on the subarray - antenna
阵列天线划分为虚拟子阵列，基于时分复用工作方式，通过程控交换矩阵与接收机连接，接收机对不同虚拟子阵列天线输出信号分时进行接收处理。 |
