Under the OSSS contract, Harris provided operations, maintenance and support services to the Air Force Satellite Control network and Global Positioning System ground networks.
根据这份OSSS合同，哈里斯公司为美国空军卫星控制网络和GPS地面网络提供了运行、维护和支持服务。
2
Plan systemmaintenance and implement effective change control
计划系统维护和实施有效的变更控制
3
The site operation proves that the equipment is reliable and capable of carrying out the measuring, control and device management and maintenance functions together with automation system.