For example if it is geographic data then you are asked about the coding system used for the locations, essential for placing the data on a map.

例如，对于地理数据，(数据浏览器)会要求你提供那些地点使用的编码系统，要将数据放到地图上，这是必不可少的。

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A system model of image sequence coding based on wavelet transform is established. Then a high data compression ratio is realized and satisfactorily reconstructed image can be obtained.

建立了基于小波变换的运动图像编码系统模型，实现了数据的高效压缩并得到了良好的恢复图像。

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The design of a point-to-points wireless data traffic system is presented, including a random delay anti-collision protocol, the implementation of this protocol and CRC coding by software.

介绍了一种点对多点无线数据传输系统的设计，提出了一种基于时分多址的“随机延时”防通信碰撞协议，并给出了该防碰撞协议和相关CRC编码的软件实现方法。

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