本产品具有开断能力打、安全可靠、电寿命长、可频繁操作、结构紧凑、体积小、重量轻、基本不需要维修等优点。
This product has the ability to hit breaking, safe, reliable, long life, frequent operation, compact structure, small size, light weight, the basic need maintenance.
数据收集的目的是在断连前把用户将来可能访问的数据预先存储到本地缓存，因此收集过程的结果将对断连操作的性能产生重大影响。
The purpose of data hoarding is storing the data will be possibly accessed to local cache in advance, so the result of gathering data is significant to the performance of disconnected operation.
普适计算的一个常见的难题是断连操作，而移动设备在断连状态下对数据进行操作又是必要的。
A common problem facing ubiquitous computing is disconnected operation, but its necessary for mobile devices to handle the data in disconnected state.
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