Pages can be designed to update a list of comments as new comments are added, to display a ticker tape of recent items, or to show a progress bar updated in real-time, for example.
例如，可以让页面在添加新注释时更新注释列表、显示一个关于最新条目的纸条，或者实时显示进度条。
The OLM USES a linear bar code tape for positioning.
OLM使用线性条形码磁带来定位。
A set of bar code detection and recognition system detects magnetic tapes strictly as well as can search data, video or audio programs on magnetic tape.
通过一套条码检测和识别系统，对磁带严格检测，同时可以对磁带 上的数据或视频、音频节目检索；
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