虚拟手术系统的研究和开发为医生提供了可反复使用的训练和模拟工具，可以应用于手术规划、手术演练和手术中的保护等。
The object of virtual surgery simulation system research and development is to provide a reusable environment for surgery training, planning, rehearsal and protection in operation.
充分利用计算机技术、地理信息系统技术有利于提高城市环境保护规划及管理水平。
Making use of the computer technology and geographical information system technique, we can promote the level of city environmental protection programming and management.
分析了现有继电保护管理中存在的问题，设计并规划了系统结构和功能模块。
Have analyzed the question existing in the relay protection management, has designed the systematic structure and planned the function module.
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