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随着科学技术高速发展和计算机的广泛应用，基础数据库的建立，遥感技术和传感设备（包括力学、温度、气敏等传感器）灵敏度的提高，为信息采集自动化提供工具；各种磁盘和光盘技术问世，为信息存储电子化提供了廉价又极为可靠的工具，计算机INTNET全球信息网的建立，为信息交
With the rapid development of science and technology and the extensive application of computers, the establishment of basic databases, the improvement of the sensitivity of remote sensing technologies and sensing devices (including mechanics, temperature and gas sensors) provide tools for the automation of information collection; various disks and optical disks The advent of technology has provided inexpensive and extremely reliable tools for the electronic storage of information, the creation of a computer INTNET World Wide Web for the exchange of information