雷声公司提供地面系统指挥、控制、通信、任务数据处理以及系统工程的支持。
Raytheon Co. provides the ground systems — command, control and communications, and mission data processing — and system engineering support.
应用灰色系统理论和宏观、微观经济学原理，以及系统工程的理论和方法，进行了城际交通运输需求分析。
The transport demand among the cities have been analysed by using the gray system theory, macroscopic and microcosmic economics principles and system engineering theory.
ACI公司提供信息技术和网络安全解决方案，以及系统工程学和开发服务，其主要客户是美国情报和军事部门。
ACI provides information technology and network security solutions, and systems engineering and development services, for the U. s. Intelligence and military communities.
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