...驶拖拉机使用全球定位系统(GPS．Global Position System)、卫星信息系统和计算机地理信息系统(GIs-Geography Information System)，行走路线一旦设定，误差只有两厘米，耕耘速度每小时2000m2，但质量比人工操作要高得多。
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An example of geography information system (GIS) service based on synchronous browse is given.
列举了基于本系统的一个同步浏览的(GIS)服务的应用实例。
Geography information system (GIS) is a system which includes the management of interspace data, and it has the abilities of memory, settlement, projection transition and displaying graphs.
林火地理信息系统（GIS）是一种包含空间资料库管理的地理信息系统，它具有储存，处理，投影转换和取回与显示图形资料的能力；
Geography Information System (GIS) and Office Automation (OA) are growing at very fast speed, but they have their advantage and shortage.
地理信息系统(GIS)和办公自动化(OA)正在飞速发展，但两者都有自己的优势与不足。
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