机要局 meaning in Chinese

secret service

The author has been working on videoconference system research for about 1 and a half years , during which time has undertaken the planning and construction work of the remote education h . 323 videoconference system for the online education academy of sichuan university , the construction work of the encrypted videoconference system for the secrecy bureau of chengdu government , and the development work of the videoconference system for beijing shixun inc , and also some research works in java programming and jmf areas
作者从事视频会议系统的研究工作近一年半的时间，其间参加过四川大学网络教育学院的用于远程教育的h . 323视频会议系统的规划和建设、成都市市委机要局的保密视频会议的建设和北京视讯公司的视频会议系统的开发，以及相关的java程序设计和jmf的研究。