为了了解从前端系统(Headend)到数字机顶盒(虚线部分)的整体结构，我们以PowerTV操作系统为例，PowerTV操作系统是PowerTV软件公司为数字机顶盒开发的操作系统，...
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关键词: RFID 读卡器; 前端系统; 负载调制; 差分载波天线驱动 [gap=837]Key words: RFID reader; front-end system; load modulation; differential carrier antenna driving ...
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在某些情况下属性会在前端系统进行实时更新。
In some cases attributes are updated by the front end system in real time.
文中给出了前端系统结构示意图和基于关键帧DC图象的快速浏览实例。
The system diagram and a real example of rapid browsing prototype based on DC image of key-frame are offered in the last of the paper.
农作物病虫害地面调查前端系统是对长期田间观察和调查数据维护的重要工具。
The front-end system of crop plant diseases and insect pests' ground survey was a very important tool which could continually observe the farm and maintain the survey data.
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