Concurrent提供了管理飞机仿真模型和图形引擎的主机，蓝宝石图像生成软件和地理数据库也可在主机上运用。
Concurrent provides the host computers that run the aircraft simulation models and the graphics engines, where the Sapphire image generation software and geographical database are executed.
本文阐述了人机系统软件相关的矢量图形系统、数据库系统、信息系统、空间信息分析系统，给出了基本原理和技术解决方案。
The relative system, such as vector graphic system, database system, and space information system, are discussed in the paper, the basic principle and realize method are discussed in the paper also.
该软件具有图形编辑、网络拓扑分析、电网信息数据库管理、潮流计算、电能损耗计算和无功优化分析等功能。
This software has functions of graphic editing, network topological analysis, power information database management, power flow calculating, power loss and reactive power optimization analysis.
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