... quad-in-line package 四列直插式组件 quad location 四角定位 quad pair cable 扭绞八心电缆 ...
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A push service system for location based tourism information was proposed by the combination of linear quad-tree, wireless network, Geographic information system (GIS) and cross media techniques.
结合线性四叉树、无线互联网、地理信息系统(GIS)和跨媒体技术，实现了一个具有高真实感、较强交互能力的旅游信息主动推送服务系统。
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